Fixed cycle delay

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Revision as of 11:58, 19 March 2016 by Bisqwit (talk | contribs) (Updated explanations; added one more loop mode)
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Delay code

Shortest possible CPU code that creates N cycles of delay, depending on constraints.

All code samples are written for CA65.

Assumptions:

  • No page wrap occurs during any branch instruction. If a page wrap occurs, it adds +1 cycle for each loop, completely thwarting the accurate delay.
  • No interrupt / NMI occurs during the delay code. Code samples where an interrupt could cause data corruption are separately indicated.

It is possible to verify on compile time that no page wrap occurs, by replacing all branches with these macros: 

.macro branch_check opc, dest
    opc dest
    .assert >* = >(dest), warning, "branch_check: failed, crosses page"
.endmacro
.macro Jcc dest
        branch_check bcc, dest
.endmacro
.macro Jcs dest
        branch_check bcs, dest
.endmacro
.macro Jeq dest
        branch_check beq, dest
.endmacro
.macro Jne dest
        branch_check bne, dest
.endmacro
.macro Jmi dest
        branch_check bmi, dest
.endmacro
.macro Jpl dest
        branch_check bpl, dest
.endmacro
.macro Jvc dest
        branch_check bvc, dest
.endmacro
.macro Jvs dest
        branch_check bvs, dest
.endmacro

It is permissible for DMA to steal cycles during the loops. If you are expecting that to happen, you have to manually adjust the delay cycle count (and it is in fact possible to do so) in order to get the correct delay.

Explanations on the requirements:

  • @zptemp means you have a zeropage address that you can write random data into.
  • @rti means you have a dummy interrupt handler installed that does nothing but RTI.
  • @rts12 means you know a memory address that contains byte $60 (RTS).
  • @rts14 means you know a memory address that contains a harmless 2-cycle instruction that fits your constraints (such as CLC, LDA #0, or NOP), followed by RTS.
  • @rts15 means you know a memory address that contains a JMP that jumps to another location that contains RTS. Alternatively, it means you know a memory address that contains a harmless 3-cycle instruction that fits your constraints (such as LDA $00), followed by RTS.
  • delay_a_25_clocks, delay_256a_16_clocks, delay_256a_x_33_clocks, delay_256a_x_31_clocks, and delay_256x_a_30_clocks are defined at Delay code.
  • "Unsafe for interrupts" means that even though the S register is not clobbered, data corruption will occur if an interrupt/NMI happens in the middle of the delay code.

{{#css: 

 .testtable td{padding:2px} .testtable td pre{padding:2px;margin:2px}

}}


2 cycles

1 bytes 
EA       NOP
 No requirements
  • All instructions cost at least 2 cycles. There is no way to do 1 cycle of delay (though −1 cycles may sometimes appear in branch cost calculations).


3 cycles

1 bytes 
48       PHA
 Clobbers S; and writes in stack
2 bytes 
C5 C5    CMP $C5
 Clobbers Z&N, and C 
24 24    BIT $24
 Clobbers Z&N, and V 
A5 A5    LDA $A5
 Clobbers A, and Z&N 
A6 A6    LDX $A6
 Clobbers X, and Z&N 
A4 A4    LDY $A4
 Clobbers Y, and Z&N 
85 xx    STA @zptemp
 Requires @zptemp 
04 04    NOP $04
 Requires support for unofficial opcodes
3 bytes 
4C xx xx JMP *+3
 Not relocatable code
  • Not relocatable means that the target address is hardcoded into the code. In ROM hacking, it sometimes makes sense to move code blobs around, and a hardcoded address makes it difficult to relocate the code. This restriction does not apply to branches, which use relative addressing. It is also assumed to not apply to JSR instructions, as chances are the JSR target is outside the code being relocated.


4 cycles

1 bytes 
68       PLA
 Clobbers A, S, and Z&N
2 bytes 
EA   ... NOP      × 2
 No requirements
  • zp-indexed modes such as LDA $00,X also do 4 cycles, but having side effects, these two-byte instructions are inferior to a simple 2 × NOP.
  • There is also an unofficial opcode NOP $00,X (34 00), but there is no reason to use this instruction when the official equivalent has the same performance.


5 cycles

2 bytes 
E6 xx    INC @zptemp
 Clobbers Z&N; and requires @zptemp 
EA       NOP
48       PHA
 Clobbers S; and writes in stack
3 bytes 
18       CLC
90 00    BCC *+2
 Clobbers C 
B8       CLV
50 00    BVC *+2
 Clobbers V 
EA       NOP
A5 A5    LDA $A5
 Clobbers A, and Z&N 
EA       NOP
A6 A6    LDX $A6
 Clobbers X, and Z&N 
EA       NOP
A4 A4    LDY $A4
 Clobbers Y, and Z&N 
EA       NOP
85 xx    STA @zptemp
 Requires @zptemp 
EA       NOP
04 04    NOP $04
 Requires support for unofficial opcodes
4 bytes 
EA       NOP
4C xx xx JMP *+3
 Not relocatable code
  • abs-indexed modes such as LDA $1234,X cause 4 or 5 cycles of delay, depending whether a page wrap occurred. Because you need extra setup code to make sure that a wrap does occur, you do not see this mode in these samples, outside situations where circumstances permit.


6 cycles

2 bytes 
F6 F6    INC $F6,X
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
48   ... PHA      × 2
 Clobbers S; and writes in stack 
EA       NOP
68       PLA
 Clobbers A, S, and Z&N
3 bytes 
EA   ... NOP      × 3
 No requirements
  • zp-indexed RMW instructions such as INC @zptemp,X do 6 cycles. Unless we know the value of X, it might write into any address between $00-$FF, which is this option is only useful if the entire range of $00-$FF is free for clobbering with random data.
  • ix instructions like LDA ($00,X) do 6 cycles, but the value of X decides where a pointer is read from, and said pointer can point anywhere, we only do that when the value of X is known.
  • iy instructions like LDA ($00),Y also do 5-6 cycles, but in addition to the note above, we cannot predict whether a wrap occurs or not. So we don't use this mode.
  • Absolute RMW instructions like INC $2000 do 6 cycles, but weighing 3 bytes with side-effects it would be inferior to 3 × NOP.


7 cycles

2 bytes 
08       PHP
28       PLP
 Writes in stack 
68       PLA
48       PHA
 Clobbers A, and Z&N
3 bytes 
EA       NOP
E6 xx    INC @zptemp
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
 Clobbers Z&N; and requires writable $700-$7FF
4 bytes 
18   ... CLC      × 2
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 2
50 00    BVC *+2
 Clobbers V 
A6 A6    LDX $A6
EA   ... NOP      × 2
 Clobbers X, and Z&N 
A4 A4    LDY $A4
EA   ... NOP      × 2
 Clobbers Y, and Z&N 
85 xx    STA @zptemp
EA   ... NOP      × 2
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 2
 Requires support for unofficial opcodes
5 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 2
 Not relocatable code
  • PHP-PLP is very efficient for 7 cycles of delay, but it does modify stack contents. S register remains unchanged though.
  • PLA-PHA does not overwrite any bytes in stack. It just writes back the same byte. But it does clobber A and Z+N.
  • abs-indexed RMW instructions such as INC abs,X do 7 cycles. We only do this either we know the value of X, or when the entire 256-byte page can be safely overwritten with random data.


8 cycles

2 bytes 
68   ... PLA      × 2
 Clobbers A, S, and Z&N
3 bytes 
BA       TSX
68       PLA
9A       TXS
 Clobbers A, X, and Z&N; and unsafe for interrupts 
EA       NOP
F6 F6    INC $F6,X
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF 
EA       NOP
48   ... PHA      × 2
 Clobbers S; and writes in stack
4 bytes 
EA   ... NOP      × 4
 No requirements
  • Unofficial ix and iy RMW instructions such as SLO ($00,X) or SLO ($00),Y would do 8 cycles for 2 bytes of code. We only do that if we know X or Y to be zero, and we have a known pointer to safely rewritable data.


9 cycles

3 bytes 
EA       NOP
08       PHP
28       PLP
 Writes in stack 
EA       NOP
68       PLA
48       PHA
 Clobbers A, and Z&N
4 bytes 
A2 AE    LDX #$AE  ;hides 'LDX $FDD0'
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 AC    LDY #$AC  ;hides 'LDY $FDD0'
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
EA   ... NOP      × 2
E6 xx    INC @zptemp
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
 Clobbers Z&N; and requires writable $700-$7FF
5 bytes 
18   ... CLC      × 3
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 3
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 3
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 3
 Requires support for unofficial opcodes
6 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 3
 Not relocatable code
  • Jumping into the middle of another instruction and thereby reusing code is a very efficient way of reducing code size. Note that all code samples using branches on this page require that no page wrap occurs.


10 cycles

3 bytes 
48       PHA
08       PHP
28       PLP
 Clobbers S; and writes in stack 
EA       NOP
68   ... PLA      × 2
 Clobbers A, S, and Z&N
4 bytes 
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N 
08       PHP
24 24    BIT $24
28       PLP
 Writes in stack
5 bytes 
EA   ... NOP      × 5
 No requirements
  • The ROL-ROR sequence preserves the original value of the memory address. Carry is also preserved.


11 cycles

3 bytes 
68   ... PLA      × 2
48       PHA
 Clobbers A, S, and Z&N
4 bytes 
EA   ... NOP      × 2
08       PHP
28       PLP
 Writes in stack 
EA   ... NOP      × 2
68       PLA
48       PHA
 Clobbers A, and Z&N 
E6 xx    INC @zptemp
F6 F6    INC $F6,X
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
5 bytes 
A2 02    LDX #2
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 02    LDY #2
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
E6 xx    INC @zptemp
EA   ... NOP      × 3
 Clobbers Z&N; and requires @zptemp 
EA   ... NOP      × 2
FE 00 02 INC $0200,X
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 2
FE 00 03 INC $0300,X
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 2
FE 00 04 INC $0400,X
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 2
FE 00 05 INC $0500,X
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 2
FE 00 06 INC $0600,X
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 2
FE 00 07 INC $0700,X
 Clobbers Z&N; and requires writable $700-$7FF
6 bytes 
18   ... CLC      × 4
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 4
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 4
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 4
 Requires support for unofficial opcodes
7 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 4
 Not relocatable code


12 cycles

3 bytes 
20 xx xx JSR @rts12
 Requires @rts12; and writes in stack 
68   ... PLA      × 3
 Clobbers A, S, and Z&N
4 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N 
08       PHP
E6 xx    INC @zptemp
28       PLP
 Requires @zptemp; and writes in stack 
48   ... PHA      × 4
 Clobbers S; and writes in stack
5 bytes 
08       PHP
18       CLC
90 00    BCC *+2
28       PLP
 Writes in stack
6 bytes 
EA   ... NOP      × 6
 No requirements
  • JSR-RTS causes 12 cycles of delay. But it does write a function return address in the stack, which may be unwanted in some applications. S is not modified.
  • Again, ROL-ROR does not have side effects (as long as an interrupt does not happen in the middle), except for Z+N.


13 cycles

2 bytes 
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack
4 bytes 
08       PHP
F6 F6    INC $F6,X
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
F6 F6    INC $F6,X
68       PLA
48       PHA
 Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF 
48   ... PHA      × 2
08       PHP
28       PLP
 Clobbers S; and writes in stack 
EA       NOP
68   ... PLA      × 2
48       PHA
 Clobbers A, S, and Z&N
5 bytes 
EA   ... NOP      × 3
08       PHP
28       PLP
 Writes in stack 
EA   ... NOP      × 3
68       PLA
48       PHA
 Clobbers A, and Z&N 
EA       NOP
E6 xx    INC @zptemp
F6 F6    INC $F6,X
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
6 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N, and V 
A6 A6    LDX $A6
26 26    ROL $26
66 26    ROR $26
 Clobbers X, and Z&N 
A4 A4    LDY $A4
26 26    ROL $26
66 26    ROR $26
 Clobbers Y, and Z&N 
85 xx    STA @zptemp
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires @zptemp 
EA   ... NOP      × 3
FE 00 02 INC $0200,X
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 3
FE 00 03 INC $0300,X
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 3
FE 00 04 INC $0400,X
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 3
FE 00 05 INC $0500,X
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 3
FE 00 06 INC $0600,X
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 3
FE 00 07 INC $0700,X
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires support for unofficial opcodes
7 bytes 
18   ... CLC      × 5
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 5
50 00    BVC *+2
 Clobbers V 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and not relocatable code 
85 xx    STA @zptemp
EA   ... NOP      × 5
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 5
 Requires support for unofficial opcodes
8 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 5
 Not relocatable code


14 cycles

3 bytes 
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack
4 bytes 
08       PHP       \ × 2
28       PLP       /
 Writes in stack 
68       PLA       \ × 2
48       PHA       /
 Clobbers A, and Z&N
5 bytes 
EA       NOP
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N
7 bytes 
EA   ... NOP      × 7
 No requirements


15 cycles

3 bytes 
20 xx xx JSR @rts15
 Requires @rts12, and @rts15; and writes in stack 
EA       NOP
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack
4 bytes 
68       PLA
48       PHA
68   ... PLA      × 2
 Clobbers A, S, and Z&N 
48       PHA
20 xx xx JSR @rts12
 Clobbers S; requires @rts12; and writes in stack
5 bytes 
08       PHP
BA       TSX
28       PLP
9A       TXS
28       PLP
 Clobbers X; and writes in stack 
68       PLA
48       PHA
BA       TSX
68       PLA
9A       TXS
 Clobbers A, X, and Z&N; and unsafe for interrupts 
EA       NOP
08       PHP
F6 F6    INC $F6,X
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
EA       NOP
F6 F6    INC $F6,X
68       PLA
48       PHA
 Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF 
C5 C5    CMP $C5
20 xx xx JSR @rts12
 Clobbers Z&N, and C; requires @rts12; and writes in stack 
24 24    BIT $24
20 xx xx JSR @rts12
 Clobbers Z&N, and V; requires @rts12; and writes in stack 
A5 A5    LDA $A5
20 xx xx JSR @rts12
 Clobbers A, and Z&N; requires @rts12; and writes in stack 
A4 A4    LDY $A4
20 xx xx JSR @rts12
 Clobbers Y, and Z&N; requires @rts12; and writes in stack 
85 xx    STA @zptemp
20 xx xx JSR @rts12
 Requires @zptemp, and @rts12; and writes in stack 
04 04    NOP $04
20 xx xx JSR @rts12
 Requires @rts12, and support for unofficial opcodes; and writes in stack 
48   ... PHA      × 5
 Clobbers S; and writes in stack
6 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and V 
08       PHP
28       PLP
EA   ... NOP      × 4
 Writes in stack 
A5 A5    LDA $A5
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers A, and Z&N 
A6 A6    LDX $A6
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers X, and Z&N 
A4 A4    LDY $A4
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Y, and Z&N 
E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires @zptemp 
04 04    NOP $04
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires support for unofficial opcodes
7 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and not relocatable code 
FE 00 02 INC $0200,X
EA   ... NOP      × 4
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
EA   ... NOP      × 4
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
EA   ... NOP      × 4
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
EA   ... NOP      × 4
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
EA   ... NOP      × 4
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
EA   ... NOP      × 4
 Clobbers Z&N; and requires writable $700-$7FF
8 bytes 
18   ... CLC      × 6
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 6
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 6
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 6
 Requires support for unofficial opcodes
9 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 6
 Not relocatable code


16 cycles

3 bytes 
48       PHA
00 00    BRK 0
 Clobbers S; requires dummy interrupt handler; and writes in stack
4 bytes 
EA       NOP
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
C5 C5    CMP $C5
00 00    BRK 0
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
24 24    BIT $24
00 00    BRK 0
 Clobbers Z&N, and V; requires dummy interrupt handler; and writes in stack 
A5 A5    LDA $A5
00 00    BRK 0
 Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack 
A6 A6    LDX $A6
00 00    BRK 0
 Clobbers X, and Z&N; requires dummy interrupt handler; and writes in stack 
A4 A4    LDY $A4
00 00    BRK 0
 Clobbers Y, and Z&N; requires dummy interrupt handler; and writes in stack 
85 xx    STA @zptemp
00 00    BRK 0
 Requires @zptemp, and dummy interrupt handler; and writes in stack 
04 04    NOP $04
00 00    BRK 0
 Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
68   ... PLA      × 4
 Clobbers A, S, and Z&N
5 bytes 
EA       NOP
08       PHP       \ × 2
28       PLP       /
 Writes in stack 
EA       NOP
68       PLA       \ × 2
48       PHA       /
 Clobbers A, and Z&N 
A2 03    LDX #3
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 03    LDY #3
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
6 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N
8 bytes 
EA   ... NOP      × 8
 No requirements


17 cycles

3 bytes 
68       PLA
00 00    BRK 0
 Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
4 bytes 
EA       NOP
20 xx xx JSR @rts15
 Requires @rts12, and @rts15; and writes in stack 
EA   ... NOP      × 2
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack 
48       PHA
20 xx xx JSR @rts14
 Clobbers S; requires @rts12, and @rts14; and writes in stack
5 bytes 
E6 xx    INC @zptemp
20 xx xx JSR @rts12
 Clobbers Z&N; requires @zptemp, and @rts12; and writes in stack 
C5 C5    CMP $C5
20 xx xx JSR @rts14
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack 
24 24    BIT $24
20 xx xx JSR @rts14
 Clobbers Z&N, and V; requires @rts12, and @rts14; and writes in stack 
A5 A5    LDA $A5
20 xx xx JSR @rts14
 Clobbers A, and Z&N; requires @rts12, and @rts14; and writes in stack 
A6 A6    LDX $A6
20 xx xx JSR @rts14
 Clobbers X, and Z&N; requires @rts12, and @rts14; and writes in stack 
A4 A4    LDY $A4
20 xx xx JSR @rts14
 Clobbers Y, and Z&N; requires @rts12, and @rts14; and writes in stack 
85 xx    STA @zptemp
20 xx xx JSR @rts14
 Requires @zptemp, @rts12, and @rts14; and writes in stack 
04 04    NOP $04
20 xx xx JSR @rts14
 Requires @rts12, @rts14, and support for unofficial opcodes; and writes in stack 
48       PHA
08       PHP       \ × 2
28       PLP       /
 Clobbers S; and writes in stack 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 2
 Clobbers A, S, and Z&N
6 bytes 
08       PHP
26 26    ROL $26
66 26    ROR $26
28       PLP
 Writes in stack 
68       PLA
48       PHA
26 26    ROL $26
66 26    ROR $26
 Clobbers A, and Z&N 
E6 xx    INC @zptemp
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires @zptemp
7 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and V 
EA       NOP
A6 A6    LDX $A6
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers X, and Z&N 
EA       NOP
A4 A4    LDY $A4
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Y, and Z&N 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires support for unofficial opcodes
8 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and not relocatable code
9 bytes 
18   ... CLC      × 7
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 7
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 7
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 7
 Requires support for unofficial opcodes
10 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 7
 Not relocatable code


18 cycles

4 bytes 
E6 xx    INC @zptemp
00 00    BRK 0
 Clobbers Z&N; requires @zptemp, and dummy interrupt handler; and writes in stack 
48       PHA
20 xx xx JSR @rts15
 Clobbers S; requires @rts12, and @rts15; and writes in stack 
68       PLA
20 xx xx JSR @rts14
 Clobbers A, S, and Z&N; requires @rts12, and @rts14; and writes in stack 
EA       NOP
48       PHA
00 00    BRK 0
 Clobbers S; requires dummy interrupt handler; and writes in stack
5 bytes 
F6 F6    INC $F6,X
20 xx xx JSR @rts12
 Clobbers Z&N; requires @zptemp, @rts12, and writable $00-$FF; and writes in stack 
EA   ... NOP      × 2
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
C5 C5    CMP $C5
20 xx xx JSR @rts15
 Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack 
24 24    BIT $24
20 xx xx JSR @rts15
 Clobbers Z&N, and V; requires @rts12, and @rts15; and writes in stack 
A5 A5    LDA $A5
20 xx xx JSR @rts15
 Clobbers A, and Z&N; requires @rts12, and @rts15; and writes in stack 
A6 A6    LDX $A6
20 xx xx JSR @rts15
 Clobbers X, and Z&N; requires @rts12, and @rts15; and writes in stack 
A4 A4    LDY $A4
20 xx xx JSR @rts15
 Clobbers Y, and Z&N; requires @rts12, and @rts15; and writes in stack 
85 xx    STA @zptemp
20 xx xx JSR @rts15
 Requires @zptemp, @rts12, and @rts15; and writes in stack 
A9       LDA #0
20 xx xx JSR delay_256a_16_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks, and delay_256a_16_clocks 
04 04    NOP $04
20 xx xx JSR @rts15
 Requires @rts12, @rts15, and support for unofficial opcodes; and writes in stack 
18       CLC
90 00    BCC *+2
00 00    BRK 0
 Clobbers C; requires dummy interrupt handler; and writes in stack 
B8       CLV
50 00    BVC *+2
00 00    BRK 0
 Clobbers V; requires dummy interrupt handler; and writes in stack 
EA       NOP
A5 A5    LDA $A5
00 00    BRK 0
 Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack 
EA       NOP
A6 A6    LDX $A6
00 00    BRK 0
 Clobbers X, and Z&N; requires dummy interrupt handler; and writes in stack 
EA       NOP
A4 A4    LDY $A4
00 00    BRK 0
 Clobbers Y, and Z&N; requires dummy interrupt handler; and writes in stack 
EA       NOP
85 xx    STA @zptemp
00 00    BRK 0
 Requires @zptemp, and dummy interrupt handler; and writes in stack 
EA       NOP
04 04    NOP $04
00 00    BRK 0
 Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
EA       NOP
68   ... PLA      × 4
 Clobbers A, S, and Z&N 
48   ... PHA      × 2
20 xx xx JSR @rts12
 Clobbers S; requires @rts12; and writes in stack
6 bytes 
EA   ... NOP      × 2
08       PHP       \ × 2
28       PLP       /
 Writes in stack 
EA   ... NOP      × 2
68       PLA       \ × 2
48       PHA       /
 Clobbers A, and Z&N 
EA       NOP
A2 03    LDX #3
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 03    LDY #3
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
F6 F6... INC $F6,X× 3
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
7 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N
9 bytes 
EA   ... NOP      × 9
 No requirements


19 cycles

4 bytes 
F6 F6    INC $F6,X
00 00    BRK 0
 Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack 
68       PLA
20 xx xx JSR @rts15
 Clobbers A, S, and Z&N; requires @rts12, and @rts15; and writes in stack 
48   ... PHA      × 2
00 00    BRK 0
 Clobbers S; requires dummy interrupt handler; and writes in stack
5 bytes 
08       PHP
28       PLP
20 xx xx JSR @rts12
 Requires @rts12; and writes in stack 
EA   ... NOP      × 3
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack 
68       PLA
48       PHA
68   ... PLA      × 3
 Clobbers A, S, and Z&N
6 bytes 
08       PHP
36 36    ROL $36,X
76 36    ROR $36,X
28       PLP
 Writes in stack 
68       PLA
48       PHA
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers A, and Z&N
7 bytes 
A6 A6    LDX $A6
A2 03    LDX #3
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 03    LDY #3
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $700-$7FF
8 bytes 
C5 C5    CMP $C5
EA   ... NOP      × 2
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and C 
24 24    BIT $24
EA   ... NOP      × 2
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and V 
04 04    NOP $04
EA   ... NOP      × 2
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires support for unofficial opcodes
9 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 2
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and not relocatable code
10 bytes 
18   ... CLC      × 8
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 8
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 8
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 8
 Requires support for unofficial opcodes
11 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 8
 Not relocatable code


20 cycles

4 bytes 
08       PHP
28       PLP
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack
5 bytes 
A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
10 FC    BPL *-2
 Clobbers A, Z&N, and C 
E6 xx    INC @zptemp
20 xx xx JSR @rts15
 Clobbers Z&N; requires @zptemp, @rts12, and @rts15; and writes in stack 
F6 F6    INC $F6,X
20 xx xx JSR @rts14
 Clobbers Z&N; requires @zptemp, @rts12, @rts14, and writable $00-$FF; and writes in stack 
68   ... PLA      × 5
 Clobbers A, S, and Z&N 
48   ... PHA      × 2
20 xx xx JSR @rts14
 Clobbers S; requires @rts12, and @rts14; and writes in stack 
EA       NOP
48       PHA
20 xx xx JSR @rts15
 Clobbers S; requires @rts12, and @rts15; and writes in stack
6 bytes 
BA       TSX
68   ... PLA      × 4
9A       TXS
 Clobbers A, X, and Z&N; and unsafe for interrupts 
08       PHP
28       PLP
08       PHP
F6 F6    INC $F6,X
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
F6 F6    INC $F6,X
68       PLA       \ × 2
48       PHA       /
 Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF 
EA   ... NOP      × 3
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
18       CLC
90 00    BCC *+2
20 xx xx JSR @rts15
 Clobbers C; requires @rts12, and @rts15; and writes in stack 
B8       CLV
50 00    BVC *+2
20 xx xx JSR @rts15
 Clobbers V; requires @rts12, and @rts15; and writes in stack 
EA       NOP
A5 A5    LDA $A5
20 xx xx JSR @rts15
 Clobbers A, and Z&N; requires @rts12, and @rts15; and writes in stack 
EA       NOP
A6 A6    LDX $A6
20 xx xx JSR @rts15
 Clobbers X, and Z&N; requires @rts12, and @rts15; and writes in stack 
EA       NOP
A4 A4    LDY $A4
20 xx xx JSR @rts15
 Clobbers Y, and Z&N; requires @rts12, and @rts15; and writes in stack 
EA       NOP
85 xx    STA @zptemp
20 xx xx JSR @rts15
 Requires @zptemp, @rts12, and @rts15; and writes in stack 
EA       NOP
04 04    NOP $04
20 xx xx JSR @rts15
 Requires @rts12, @rts15, and support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
08       PHP       \ × 2
28       PLP       /
 Clobbers S; and writes in stack
7 bytes 
EA   ... NOP      × 3
08       PHP       \ × 2
28       PLP       /
 Writes in stack 
EA   ... NOP      × 3
68       PLA       \ × 2
48       PHA       /
 Clobbers A, and Z&N 
EA   ... NOP      × 2
A2 03    LDX #3
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 03    LDY #3
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
EA       NOP
F6 F6... INC $F6,X× 3
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
8 bytes 
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N
10 bytes 
EA   ... NOP      × 10
 No requirements


21 cycles

4 bytes 
68   ... PLA      × 2
00 00    BRK 0
 Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
5 bytes 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
 Clobbers A, Z&N, and C 
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
08       PHP
28       PLP
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
F6 F6    INC $F6,X
20 xx xx JSR @rts15
 Clobbers Z&N; requires @zptemp, @rts12, @rts15, and writable $00-$FF; and writes in stack 
EA       NOP
F6 F6    INC $F6,X
00 00    BRK 0
 Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack 
48   ... PHA      × 2
20 xx xx JSR @rts15
 Clobbers S; requires @rts12, and @rts15; and writes in stack 
EA       NOP
48   ... PHA      × 2
00 00    BRK 0
 Clobbers S; requires dummy interrupt handler; and writes in stack
6 bytes 
08       PHP       \ × 3
28       PLP       /
 Writes in stack 
68       PLA       \ × 3
48       PHA       /
 Clobbers A, and Z&N
8 bytes 
EA   ... NOP      × 2
E6 xx    INC @zptemp
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $700-$7FF
9 bytes 
C5 C5    CMP $C5
EA   ... NOP      × 3
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and C 
24 24    BIT $24
EA   ... NOP      × 3
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and V 
04 04    NOP $04
EA   ... NOP      × 3
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires support for unofficial opcodes
10 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 3
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and not relocatable code
11 bytes 
18   ... CLC      × 9
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 9
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 9
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 9
 Requires support for unofficial opcodes
12 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 9
 Not relocatable code


22 cycles

5 bytes 
08       PHP
28       PLP
20 xx xx JSR @rts15
 Requires @rts12, and @rts15; and writes in stack 
EA       NOP
08       PHP
28       PLP
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack 
68   ... PLA      × 2
20 xx xx JSR @rts14
 Clobbers A, S, and Z&N; requires @rts12, and @rts14; and writes in stack
6 bytes 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
10 FC    BPL *-2
 Clobbers A, Z&N, and C 
A2 03    LDX #3
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 03    LDY #3
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N 
EA       NOP
F6 F6    INC $F6,X
20 xx xx JSR @rts14
 Clobbers Z&N; requires @zptemp, @rts12, @rts14, and writable $00-$FF; and writes in stack 
EA       NOP
68   ... PLA      × 5
 Clobbers A, S, and Z&N 
48       PHA
08       PHP
28       PLP
20 xx xx JSR @rts12
 Clobbers S; requires @rts12; and writes in stack
7 bytes 
08       PHP
BA       TSX
08       PHP
28   ... PLP      × 2
9A       TXS
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
28       PLP
08       PHP
F6 F6    INC $F6,X
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
EA       NOP
F6 F6    INC $F6,X
68       PLA       \ × 2
48       PHA       /
 Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF 
08       PHP
24 24    BIT $24
28       PLP
20 xx xx JSR @rts12
 Requires @rts12; and writes in stack 
48       PHA
08       PHP
36 36    ROL $36,X
76 36    ROR $36,X
28       PLP
 Clobbers S; and writes in stack
8 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N 
08       PHP
24 24    BIT $24
36 36    ROL $36,X
76 36    ROR $36,X
28       PLP
 Writes in stack
11 bytes 
EA   ... NOP      × 11
 No requirements


23 cycles

5 bytes 
A9 2A    LDA #$2A ;hides 'ROL A'
48       PHA
10 FC    BPL *-2
 Clobbers A, S, Z&N, and C; and writes in stack 
68   ... PLA      × 2
20 xx xx JSR @rts15
 Clobbers A, S, and Z&N; requires @rts12, and @rts15; and writes in stack 
48       PHA
08       PHP
28       PLP
00 00    BRK 0
 Clobbers S; requires dummy interrupt handler; and writes in stack
6 bytes 
18   ... CLC      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
 Clobbers A, Z&N, and C 
EA       NOP
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
EA       NOP
08       PHP
28       PLP
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
EA       NOP
F6 F6    INC $F6,X
20 xx xx JSR @rts15
 Clobbers Z&N; requires @zptemp, @rts12, @rts15, and writable $00-$FF; and writes in stack 
08       PHP
24 24    BIT $24
28       PLP
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack 
68       PLA
48       PHA
68   ... PLA      × 4
 Clobbers A, S, and Z&N 
EA       NOP
48   ... PHA      × 2
20 xx xx JSR @rts15
 Clobbers S; requires @rts12, and @rts15; and writes in stack
7 bytes 
EA       NOP
08       PHP       \ × 3
28       PLP       /
 Writes in stack 
EA       NOP
68       PLA       \ × 3
48       PHA       /
 Clobbers A, and Z&N
8 bytes 
E6 xx    INC @zptemp
F6 F6... INC $F6,X× 3
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
9 bytes 
E6 xx    INC @zptemp
EA   ... NOP      × 3
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires @zptemp 
EA   ... NOP      × 2
FE 00 02 INC $0200,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 2
FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 2
FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 2
FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 2
FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 2
FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $700-$7FF
10 bytes 
C5 C5    CMP $C5
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires support for unofficial opcodes
11 bytes 
4C xx xx JMP *+3
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and not relocatable code
12 bytes 
18   ... CLC      × 10
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 10
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 10
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 10
 Requires support for unofficial opcodes
13 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 10
 Not relocatable code


24 cycles

4 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, Z&N, and C
5 bytes 
48       PHA
68   ... PLA      × 2
00 00    BRK 0
 Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
6 bytes 
20 xx xx JSR @rts12× 2
 Requires @rts12; and writes in stack 
EA   ... NOP      × 2
08       PHP
28       PLP
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack 
68   ... PLA      × 6
 Clobbers A, S, and Z&N 
48       PHA
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
08       PHP       \ × 3
28       PLP       /
 Clobbers S; and writes in stack
8 bytes 
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N 
08       PHP
28       PLP
08       PHP
26 26    ROL $26
66 26    ROR $26
28       PLP
 Writes in stack
12 bytes 
EA   ... NOP      × 12
 No requirements


25 cycles

5 bytes 
20 xx xx JSR @rts12
00 00    BRK 0
 Requires dummy interrupt handler, and @rts12; and writes in stack 
68   ... PLA      × 3
00 00    BRK 0
 Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
6 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
00 00    BRK 0
 Clobbers Z&N; requires dummy interrupt handler; and writes in stack 
08       PHP
E6 xx    INC @zptemp
28       PLP
00 00    BRK 0
 Requires @zptemp, and dummy interrupt handler; and writes in stack 
68       PLA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
 Clobbers A, S, Z&N, and C 
A2 03    LDX #3
48       PHA
CA       DEX
D0 FC    BNE *-2
 Clobbers X, S, and Z&N; and writes in stack 
A0 03    LDY #3
48       PHA
88       DEY
D0 FC    BNE *-2
 Clobbers Y, S, and Z&N; and writes in stack 
68       PLA
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N 
48       PHA
08       PHP
28       PLP
20 xx xx JSR @rts15
 Clobbers S; requires @rts12, and @rts15; and writes in stack 
48       PHA
68   ... PLA      × 2
20 xx xx JSR @rts14
 Clobbers A, S, and Z&N; requires @rts12, and @rts14; and writes in stack 
48   ... PHA      × 4
00 00    BRK 0
 Clobbers S; requires dummy interrupt handler; and writes in stack
7 bytes 
EA   ... NOP      × 2
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
 Clobbers A, Z&N, and C 
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
08       PHP
28       PLP
10 FA    BPL *-4
 Clobbers A, and Z&N; and writes in stack 
EA   ... NOP      × 2
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
20 xx xx JSR @rts12
08       PHP
F6 F6    INC $F6,X
28       PLP
 Requires @zptemp, @rts12, and writable $00-$FF; and writes in stack 
EA   ... NOP      × 2
08       PHP
28       PLP
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
08       PHP
24 24    BIT $24
28       PLP
20 xx xx JSR @rts15
 Requires @rts12, and @rts15; and writes in stack 
48       PHA
A9       LDA #0
20 xx xx JSR delay_256a_16_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks, and delay_256a_16_clocks; and writes in stack 
08       PHP
A9       LDA #0
20 xx xx JSR delay_256a_16_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks, and delay_256a_16_clocks; and writes in stack 
EA       NOP
08       PHP
24 24    BIT $24
28       PLP
00 00    BRK 0
 Requires dummy interrupt handler; and writes in stack 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 4
 Clobbers A, S, and Z&N 
48   ... PHA      × 2
08       PHP
28       PLP
20 xx xx JSR @rts12
 Clobbers S; requires @rts12; and writes in stack
8 bytes 
EA   ... NOP      × 2
08       PHP       \ × 3
28       PLP       /
 Writes in stack 
EA   ... NOP      × 2
68       PLA       \ × 3
48       PHA       /
 Clobbers A, and Z&N
9 bytes 
EA       NOP
E6 xx    INC @zptemp
F6 F6... INC $F6,X× 3
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
10 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires @zptemp 
EA   ... NOP      × 3
FE 00 02 INC $0200,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 3
FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 3
FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 3
FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 3
FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 3
FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires support for unofficial opcodes
11 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and not relocatable code
13 bytes 
18   ... CLC      × 11
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 11
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 11
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 11
 Requires support for unofficial opcodes
14 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 11
 Not relocatable code


26 cycles

4 bytes 
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack
5 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, Z&N, and C 
A2 05    LDX #5
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
6 bytes 
20 xx xx JSR @rts12
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
48       PHA
68   ... PLA      × 2
20 xx xx JSR @rts15
 Clobbers A, S, and Z&N; requires @rts12, and @rts15; and writes in stack
7 bytes 
EA       NOP
20 xx xx JSR @rts12× 2
 Requires @rts12; and writes in stack 
EA       NOP
68   ... PLA      × 6
 Clobbers A, S, and Z&N
8 bytes 
08       PHP
28       PLP
08       PHP
36 36    ROL $36,X
76 36    ROR $36,X
28       PLP
 Writes in stack 
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA       \ × 2
48       PHA       /
 Clobbers A, and Z&N
9 bytes 
EA       NOP
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N
13 bytes 
EA   ... NOP      × 13
 No requirements


27 cycles

5 bytes 
A9       LDA #0
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks 
00 00    BRK 0
20 xx xx JSR @rts14
 Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, S, Z&N, and C; and writes in stack
6 bytes 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, Z&N, and C 
20 xx xx JSR @rts12
20 xx xx JSR @rts15
 Requires @rts12, and @rts15; and writes in stack 
00 00    BRK 0
08       PHP       \ × 2
28       PLP       /
 Requires dummy interrupt handler; and writes in stack
7 bytes 
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
08       PHP
F6 F6    INC $F6,X
28       PLP
20 xx xx JSR @rts14
 Requires @zptemp, @rts12, @rts14, and writable $00-$FF; and writes in stack 
A2 82    LDX #130 ;hides 'NOP #imm'
04 EA    NOP $EA ;hides 'NOP'
CA       DEX
30 FA    BMI *-4
 Clobbers X, and Z&N; and requires support for unofficial opcodes 
A0 82    LDY #130 ;hides 'NOP #imm'
04 EA    NOP $EA ;hides 'NOP'
88       DEY
30 FA    BMI *-4
 Clobbers Y, and Z&N; and requires support for unofficial opcodes 
68       PLA
48       PHA
68   ... PLA      × 5
 Clobbers A, S, and Z&N 
48   ... PHA      × 2
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48   ... PHA      × 2
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack 
48       PHA
20 xx xx JSR @rts12× 2
 Clobbers S; requires @rts12; and writes in stack
8 bytes 
EA   ... NOP      × 3
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
08       PHP
F6 F6    INC $F6,X
28       PLP       \ × 2
08       PHP       /
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
F6 F6    INC $F6,X
68       PLA       \ × 3
48       PHA       /
 Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF 
24 24    BIT $24
20 xx xx JSR @rts12× 2
 Clobbers Z&N, and V; requires @rts12; and writes in stack 
20 xx xx JSR @rts12
08       PHP
BA       TSX
28       PLP
9A       TXS
28       PLP
 Clobbers X; requires @rts12; and writes in stack 
85 xx    STA @zptemp
20 xx xx JSR @rts12× 2
 Requires @zptemp, and @rts12; and writes in stack 
EA   ... NOP      × 3
08       PHP
28       PLP
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
04 04    NOP $04
20 xx xx JSR @rts12× 2
 Requires @rts12, and support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
08       PHP       \ × 3
28       PLP       /
 Clobbers S; and writes in stack
9 bytes 
08       PHP
48       PHA
A9 6A    LDA #$6A ;hides 'ROR A'
38       SEC
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack 
EA   ... NOP      × 3
68       PLA       \ × 3
48       PHA       /
 Clobbers A, and Z&N
10 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires @zptemp 
04 04    NOP $04
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
11 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code 
FE 00 02 INC $0200,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $700-$7FF
14 bytes 
18   ... CLC      × 12
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 12
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 12
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 12
 Requires support for unofficial opcodes
15 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 12
 Not relocatable code


28 cycles

5 bytes 
A9       LDA #1
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks 
EA       NOP
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, S, Z&N, and C
6 bytes 
EA   ... NOP      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, Z&N, and C 
EA       NOP
A2 05    LDX #5
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
20 xx xx JSR @rts14× 2
 Requires @rts12, and @rts14; and writes in stack
7 bytes 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
F6 F6    INC $F6,X
28       PLP
20 xx xx JSR @rts15
 Requires @zptemp, @rts12, @rts15, and writable $00-$FF; and writes in stack 
68   ... PLA      × 7
 Clobbers A, S, and Z&N 
48   ... PHA      × 2
08       PHP
28       PLP
20 xx xx JSR @rts15
 Clobbers S; requires @rts12, and @rts15; and writes in stack
8 bytes 
08       PHP       \ × 4
28       PLP       /
 Writes in stack 
68       PLA       \ × 4
48       PHA       /
 Clobbers A, and Z&N
10 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N
14 bytes 
EA   ... NOP      × 14
 No requirements


29 cycles

5 bytes 
A9       LDA #2
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks 
48       PHA
00 00... BRK 0    × 2
 Clobbers S; requires dummy interrupt handler; and writes in stack
6 bytes 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
90 FC    BCC *-2
 Clobbers A, Z&N, and C 
A2 04    LDX #4
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 04    LDY #4
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N 
20 xx xx JSR @rts14
20 xx xx JSR @rts15
 Requires @rts12, @rts14, and @rts15; and writes in stack 
C5 C5    CMP $C5
00 00... BRK 0    × 2
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
24 24    BIT $24
00 00... BRK 0    × 2
 Clobbers Z&N, and V; requires dummy interrupt handler; and writes in stack 
A5 A5    LDA $A5
00 00... BRK 0    × 2
 Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack 
85 xx    STA @zptemp
00 00... BRK 0    × 2
 Requires @zptemp, and dummy interrupt handler; and writes in stack 
EA       NOP
00 00    BRK 0
20 xx xx JSR @rts14
 Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack 
04 04    NOP $04
00 00... BRK 0    × 2
 Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
7 bytes 
EA       NOP
20 xx xx JSR @rts12
20 xx xx JSR @rts15
 Requires @rts12, and @rts15; and writes in stack 
EA       NOP
00 00    BRK 0
08       PHP       \ × 2
28       PLP       /
 Requires dummy interrupt handler; and writes in stack 
48       PHA
20 xx xx JSR @rts12
20 xx xx JSR @rts14
 Clobbers S; requires @rts12, and @rts14; and writes in stack
8 bytes 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 03    LDX #3
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 03    LDY #3
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
E6 xx    INC @zptemp
20 xx xx JSR @rts12× 2
 Clobbers Z&N; requires @zptemp, and @rts12; and writes in stack 
24 24    BIT $24
20 xx xx JSR @rts12
20 xx xx JSR @rts14
 Clobbers Z&N, and V; requires @rts12, and @rts14; and writes in stack 
85 xx    STA @zptemp
20 xx xx JSR @rts12
20 xx xx JSR @rts14
 Requires @zptemp, @rts12, and @rts14; and writes in stack 
04 04    NOP $04
20 xx xx JSR @rts12
20 xx xx JSR @rts14
 Requires @rts12, @rts14, and support for unofficial opcodes; and writes in stack 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 5
 Clobbers A, S, and Z&N 
EA       NOP
48       PHA
20 xx xx JSR @rts12× 2
 Clobbers S; requires @rts12; and writes in stack
9 bytes 
EA       NOP
08       PHP
F6 F6    INC $F6,X
28       PLP       \ × 2
08       PHP       /
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
EA       NOP
F6 F6    INC $F6,X
68       PLA       \ × 3
48       PHA       /
 Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF 
20 xx xx JSR @rts12
08       PHP
26 26    ROL $26
66 26    ROR $26
28       PLP
 Requires @rts12; and writes in stack 
48       PHA
08       PHP
28       PLP
08       PHP
36 36    ROL $36,X
76 36    ROR $36,X
28       PLP
 Clobbers S; and writes in stack
10 bytes 
08       PHP
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
28       PLP
 Writes in stack 
68       PLA
48       PHA
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers A, and Z&N 
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp
11 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and V 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
12 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
15 bytes 
18   ... CLC      × 13
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 13
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 13
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 13
 Requires support for unofficial opcodes
16 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 13
 Not relocatable code


30 cycles

5 bytes 
A9       LDA #3
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks 
68       PLA
00 00... BRK 0    × 2
 Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
6 bytes 
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
20 xx xx JSR @rts15× 2
 Requires @rts12, and @rts15; and writes in stack 
EA   ... NOP      × 2
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack 
EA       NOP
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, S, Z&N, and C 
68       PLA
A2 05    LDX #5
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
EA   ... NOP      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, Z&N, and C 
EA   ... NOP      × 2
A2 05    LDX #5
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
EA       NOP
20 xx xx JSR @rts14× 2
 Requires @rts12, and @rts14; and writes in stack
8 bytes 
48       PHA
18   ... CLC      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18   ... CLC      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
F6 F6    INC $F6,X
20 xx xx JSR @rts12× 2
 Clobbers Z&N; requires @zptemp, @rts12, and writable $00-$FF; and writes in stack 
EA       NOP
68   ... PLA      × 7
 Clobbers A, S, and Z&N 
48   ... PHA      × 2
20 xx xx JSR @rts12× 2
 Clobbers S; requires @rts12; and writes in stack
9 bytes 
08       PHP
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Writes in stack 
EA       NOP
68       PLA       \ × 4
48       PHA       /
 Clobbers A, and Z&N
10 bytes 
F6 F6... INC $F6,X× 5
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
11 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N
15 bytes 
EA   ... NOP      × 15
 No requirements


31 cycles

5 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
 Clobbers A, Z&N, and C 
A2 06    LDX #6
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 06    LDY #6
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
6 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A; and writes in stack 
E6 xx    INC @zptemp
00 00... BRK 0    × 2
 Clobbers Z&N; requires @zptemp, and dummy interrupt handler; and writes in stack 
EA       NOP
48       PHA
00 00... BRK 0    × 2
 Clobbers S; requires dummy interrupt handler; and writes in stack
7 bytes 
EA       NOP
20 xx xx JSR @rts14
20 xx xx JSR @rts15
 Requires @rts12, @rts14, and @rts15; and writes in stack 
18       CLC
90 00    BCC *+2
00 00... BRK 0    × 2
 Clobbers C; requires dummy interrupt handler; and writes in stack 
B8       CLV
50 00    BVC *+2
00 00... BRK 0    × 2
 Clobbers V; requires dummy interrupt handler; and writes in stack 
EA       NOP
85 xx    STA @zptemp
00 00... BRK 0    × 2
 Requires @zptemp, and dummy interrupt handler; and writes in stack 
EA   ... NOP      × 2
00 00    BRK 0
20 xx xx JSR @rts14
 Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack 
EA       NOP
04 04    NOP $04
00 00... BRK 0    × 2
 Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
48       PHA
20 xx xx JSR @rts14× 2
 Clobbers S; requires @rts12, and @rts14; and writes in stack
8 bytes 
08       PHP
28       PLP
20 xx xx JSR @rts12× 2
 Requires @rts12; and writes in stack 
EA   ... NOP      × 2
00 00    BRK 0
08       PHP       \ × 2
28       PLP       /
 Requires dummy interrupt handler; and writes in stack 
68       PLA
48       PHA
68   ... PLA      × 6
 Clobbers A, S, and Z&N 
48       PHA
08       PHP
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
08       PHP
A6 A6    LDX $A6
A2 04    LDX #4
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 04    LDY #4
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
08       PHP       \ × 4
28       PLP       /
 Clobbers S; and writes in stack
10 bytes 
08       PHP
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
28       PLP
 Writes in stack 
68       PLA
48       PHA
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers A, and Z&N
11 bytes 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
12 bytes 
EA   ... NOP      × 2
C5 C5    CMP $C5
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA   ... NOP      × 2
24 24    BIT $24
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and V 
EA   ... NOP      × 2
04 04    NOP $04
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
13 bytes 
EA   ... NOP      × 2
4C xx xx JMP *+3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
16 bytes 
18   ... CLC      × 14
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 14
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 14
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 14
 Requires support for unofficial opcodes
17 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 14
 Not relocatable code


32 cycles

5 bytes 
A9       LDA #5
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A2 05    LDX #5 ;hides 'ORA zp'
CA       DEX ;first loop only
CA       DEX
D0 FB    BNE *-3
 Clobbers A, X, and Z&N 
A0 05    LDY #5 ;hides 'ORA zp'
88       DEY ;first loop only
88       DEY
D0 FB    BNE *-3
 Clobbers A, Y, and Z&N 
F6 F6    INC $F6,X
00 00... BRK 0    × 2
 Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack 
68   ... PLA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, S, Z&N, and C 
48   ... PHA      × 2
00 00... BRK 0    × 2
 Clobbers S; requires dummy interrupt handler; and writes in stack
7 bytes 
A9 2A    LDA #$2A ;hides 'ROL A'
EA   ... NOP      × 2
18       CLC
10 FA    BPL *-4
 Clobbers A, Z&N, and C 
A2 05    LDX #5
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
EA       NOP
20 xx xx JSR @rts15× 2
 Requires @rts12, and @rts15; and writes in stack 
A2 FA    LDX #250 ;hides 'NOP'
EA       NOP
E8   ... INX      × 2
D0 FA    BNE *-4
 Clobbers X, and Z&N; and requires support for unofficial opcodes 
A0 FA    LDY #250 ;hides 'NOP'
EA       NOP
C8   ... INY      × 2
D0 FA    BNE *-4
 Clobbers Y, and Z&N; and requires support for unofficial opcodes 
EA   ... NOP      × 3
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
A2 05    LDX #5
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48   ... PHA      × 2
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack 
68       PLA
20 xx xx JSR @rts14× 2
 Clobbers A, S, and Z&N; requires @rts12, and @rts14; and writes in stack
8 bytes 
A6 A6    LDX $A6
A2 04    LDX #4
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 04    LDY #4
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N 
EA   ... NOP      × 2
20 xx xx JSR @rts14× 2
 Requires @rts12, and @rts14; and writes in stack 
68   ... PLA      × 8
 Clobbers A, S, and Z&N
9 bytes 
48       PHA
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
08       PHP
28       PLP
10 FA    BPL *-4
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 2
08       PHP
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 03    LDX #3
C5 C5    CMP $C5
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 03    LDY #3
C5 C5    CMP $C5
88       DEY
D0 FB    BNE *-3
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
28       PLP
20 xx xx JSR @rts12
08       PHP
F6 F6    INC $F6,X
28       PLP
 Requires @zptemp, @rts12, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9       LDA #0
20 xx xx JSR delay_256a_16_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks, and delay_256a_16_clocks; and writes in stack 
EA       NOP
48   ... PHA      × 2
20 xx xx JSR @rts12× 2
 Clobbers S; requires @rts12; and writes in stack
10 bytes 
08       PHP
48       PHA
18   ... CLC      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Writes in stack 
EA   ... NOP      × 2
68       PLA       \ × 4
48       PHA       /
 Clobbers A, and Z&N
11 bytes 
EA       NOP
F6 F6... INC $F6,X× 5
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
12 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N
16 bytes 
EA   ... NOP      × 16
 No requirements


33 cycles

5 bytes 
A9       LDA #6
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
 Clobbers A, Z&N, and C 
EA       NOP
A2 06    LDX #6
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 06    LDY #6
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
08       PHP
28       PLP
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack
7 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 05    LDX #5
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
20 xx xx JSR @rts15× 2
 Clobbers S; requires @rts12, and @rts15; and writes in stack
8 bytes 
08       PHP
28       PLP
20 xx xx JSR @rts12
20 xx xx JSR @rts14
 Requires @rts12, and @rts14; and writes in stack 
24 24    BIT $24
20 xx xx JSR @rts15× 2
 Clobbers Z&N, and V; requires @rts12, and @rts15; and writes in stack 
85 xx    STA @zptemp
20 xx xx JSR @rts15× 2
 Requires @zptemp, @rts12, and @rts15; and writes in stack 
04 04    NOP $04
20 xx xx JSR @rts15× 2
 Requires @rts12, @rts15, and support for unofficial opcodes; and writes in stack
9 bytes 
EA       NOP
08       PHP
28       PLP
20 xx xx JSR @rts12× 2
 Requires @rts12; and writes in stack 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 6
 Clobbers A, S, and Z&N
10 bytes 
08       PHP       \ × 2
28       PLP       /
08       PHP
36 36    ROL $36,X
76 36    ROR $36,X
28       PLP
 Writes in stack 
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA       \ × 3
48       PHA       /
 Clobbers A, and Z&N
12 bytes 
EA   ... NOP      × 2
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
13 bytes 
C5 C5    CMP $C5
EA   ... NOP      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
EA   ... NOP      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
EA   ... NOP      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
14 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
17 bytes 
18   ... CLC      × 15
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 15
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 15
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 15
 Requires support for unofficial opcodes
18 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 15
 Not relocatable code


34 cycles

5 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
 Clobbers A, Z&N, and C 
A0 88    LDY #136 ;hides 'DEY'
88       DEY
30 FC    BMI *-2
 Clobbers Y, and Z&N
6 bytes 
48       PHA
A2 06    LDX #6
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
68   ... PLA      × 2
00 00... BRK 0    × 2
 Clobbers A, S, and Z&N; requires dummy interrupt handler; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 06    LDX #6
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
48       PHA
A9       LDA #0
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #0
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
EA       NOP
F6 F6    INC $F6,X
00 00... BRK 0    × 2
 Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack 
08       PHP
28       PLP
00 00    BRK 0
20 xx xx JSR @rts14
 Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
48       PHA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A, and S; and writes in stack 
EA       NOP
48   ... PHA      × 2
00 00... BRK 0    × 2
 Clobbers S; requires dummy interrupt handler; and writes in stack
8 bytes 
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
20 xx xx JSR @rts15× 2
 Requires @rts12, and @rts15; and writes in stack 
F6 F6    INC $F6,X
20 xx xx JSR @rts14× 2
 Clobbers Z&N; requires @zptemp, @rts12, @rts14, and writable $00-$FF; and writes in stack 
EA   ... NOP      × 4
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
20 xx xx JSR @rts14× 2
 Clobbers S; requires @rts12, and @rts14; and writes in stack
9 bytes 
08       PHP
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack 
EA       NOP
68   ... PLA      × 8
 Clobbers A, S, and Z&N
10 bytes 
F6 F6    INC $F6,X
68       PLA       \ × 4
48       PHA       /
 Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF
11 bytes 
EA   ... NOP      × 3
68       PLA       \ × 4
48       PHA       /
 Clobbers A, and Z&N
12 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N
17 bytes 
EA   ... NOP      × 17
 No requirements


35 cycles

5 bytes 
A9       LDA #8
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
10 FB    BPL *-3
 Clobbers A, Z&N, and C; and writes in stack 
A0 88    LDY #136 ;hides 'DEY'
88   ... DEY      × 2
30 FB    BMI *-3
 Clobbers Y, and Z&N 
A2 F8    LDX #248 ;hides 'SED'
E8   ... INX      × 2
D0 FB    BNE *-3
 Clobbers X, Z&N, and D 
68       PLA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
 Clobbers A, S, Z&N, and C 
68       PLA
A2 06    LDX #6
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N
7 bytes 
EA   ... NOP      × 2
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
 Clobbers A, Z&N, and C 
EA   ... NOP      × 2
A2 06    LDX #6
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
48       PHA
A9       LDA #1
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #1
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
EA       NOP
08       PHP
28       PLP
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack 
68       PLA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A, S, and Z&N; and writes in stack
8 bytes 
EA   ... NOP      × 2
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
EA   ... NOP      × 2
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 05    LDX #5
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
28       PLP
20 xx xx JSR @rts14× 2
 Requires @rts12, and @rts14; and writes in stack 
E6 xx    INC @zptemp
20 xx xx JSR @rts15× 2
 Clobbers Z&N; requires @zptemp, @rts12, and @rts15; and writes in stack 
EA       NOP
48       PHA
20 xx xx JSR @rts15× 2
 Clobbers S; requires @rts12, and @rts15; and writes in stack
9 bytes 
08       PHP
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68       PLA
28       PLP
 Writes in stack 
68       PLA
48       PHA
68   ... PLA      × 7
 Clobbers A, S, and Z&N
10 bytes 
68       PLA       \ × 5
48       PHA       /
 Clobbers A, and Z&N
12 bytes 
E6 xx    INC @zptemp
F6 F6... INC $F6,X× 5
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
13 bytes 
E6 xx    INC @zptemp
EA   ... NOP      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
EA   ... NOP      × 2
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 2
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 2
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 2
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 2
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 2
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
14 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N, and V 
04 04    NOP $04
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires support for unofficial opcodes
15 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and not relocatable code
18 bytes 
18   ... CLC      × 16
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 16
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 16
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 16
 Requires support for unofficial opcodes
19 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 16
 Not relocatable code


36 cycles

5 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V 
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 07    LDY #7
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
6 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
 Clobbers A, Z&N, and C
7 bytes 
48       PHA
A9       LDA #2
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #2
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
08       PHP
28       PLP
00 00... BRK 0    × 2
 Clobbers S; requires dummy interrupt handler; and writes in stack
8 bytes 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
90 FC    BCC *-2
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
90 FC    BCC *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 04    LDX #4
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 04    LDY #4
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
F6 F6    INC $F6,X
20 xx xx JSR @rts15× 2
 Clobbers Z&N; requires @zptemp, @rts12, @rts15, and writable $00-$FF; and writes in stack 
08       PHP
28       PLP
20 xx xx JSR @rts14
20 xx xx JSR @rts15
 Requires @rts12, @rts14, and @rts15; and writes in stack 
08       PHP
24 24    BIT $24
28       PLP
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
20 xx xx JSR @rts15× 2
 Clobbers S; requires @rts12, and @rts15; and writes in stack
9 bytes 
20 xx xx JSR @rts12× 3
 Requires @rts12; and writes in stack 
68   ... PLA      × 9
 Clobbers A, S, and Z&N
10 bytes 
08       PHP
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
18       CLC
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
11 bytes 
EA       NOP
F6 F6    INC $F6,X
68       PLA       \ × 4
48       PHA       /
 Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF
12 bytes 
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N
18 bytes 
EA   ... NOP      × 18
 No requirements


37 cycles

5 bytes 
A9       LDA #10
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
00 00    BRK 0
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
 Clobbers A, S, Z&N, and C; and writes in stack 
48       PHA
A0 88    LDY #136 ;hides 'DEY'
88       DEY
30 FC    BMI *-2
 Clobbers Y, S, and Z&N; and writes in stack 
A2 04    LDX #4
68       PLA
CA       DEX
D0 FC    BNE *-2
 Clobbers A, X, S, and Z&N 
A0 04    LDY #4
68       PLA
88       DEY
D0 FC    BNE *-2
 Clobbers A, Y, S, and Z&N
7 bytes 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
 Clobbers A, Z&N, and C 
A2 04    LDX #4
EA   ... NOP      × 2
CA       DEX
D0 FB    BNE *-3
 Clobbers X, and Z&N 
A0 04    LDY #4
EA   ... NOP      × 2
88       DEY
D0 FB    BNE *-3
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #3
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #3
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
00 00    BRK 0
10 FA    BPL *-4
 Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack
8 bytes 
F6 F6    INC $F6,X
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
28       PLP
20 xx xx JSR @rts15× 2
 Requires @rts12, and @rts15; and writes in stack 
EA   ... NOP      × 2
08       PHP
28       PLP
00 00... BRK 0    × 2
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
48   ... PHA      × 2
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A, and S; and writes in stack
9 bytes 
EA   ... NOP      × 3
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
EA   ... NOP      × 3
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 05    LDX #5
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
EA       NOP
08       PHP
28       PLP
20 xx xx JSR @rts14× 2
 Requires @rts12, and @rts14; and writes in stack
10 bytes 
08       PHP
48       PHA
18   ... CLC      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68       PLA
28       PLP
 Writes in stack 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 7
 Clobbers A, S, and Z&N
11 bytes 
EA       NOP
68       PLA       \ × 5
48       PHA       /
 Clobbers A, and Z&N
13 bytes 
EA       NOP
E6 xx    INC @zptemp
F6 F6... INC $F6,X× 5
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
14 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires @zptemp 
EA   ... NOP      × 3
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 3
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 3
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 3
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 3
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 3
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
15 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
19 bytes 
18   ... CLC      × 17
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 17
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 17
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 17
 Requires support for unofficial opcodes
20 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 17
 Not relocatable code


38 cycles

5 bytes 
A9       LDA #11
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
10 FC    BPL *-2
 Clobbers A, Z&N, C, and V 
EA       NOP
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 07    LDY #7
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
 Clobbers A, S, Z&N, and C
7 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
EA   ... NOP      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
 Clobbers A, Z&N, and C 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 06    LDX #6
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 06    LDY #6
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
20 xx xx JSR @rts12
00 00... BRK 0    × 2
 Requires dummy interrupt handler, and @rts12; and writes in stack
8 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Writes in stack
10 bytes 
EA       NOP
68   ... PLA      × 9
 Clobbers A, S, and Z&N
12 bytes 
68       PLA       \ × 2
48       PHA       /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers A, and Z&N
13 bytes 
EA       NOP
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N
19 bytes 
EA   ... NOP      × 19
 No requirements


39 cycles

4 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C
6 bytes 
00 00... BRK 0    × 3
 Requires dummy interrupt handler; and writes in stack 
48       PHA
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 07    LDY #7
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 07    LDY #7
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #5
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #5
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
08       PHP
A2 05    LDX #5 ;hides 'ORA zp'
CA       DEX ;first loop only
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers A, and X; and writes in stack 
08       PHP
A0 05    LDY #5 ;hides 'ORA zp'
88       DEY ;first loop only
88       DEY
D0 FB    BNE *-3
28       PLP
 Clobbers A, and Y; and writes in stack 
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
20 xx xx JSR @rts14
10 F9    BPL *-5
 Clobbers A, and Z&N; requires @rts12, and @rts14; and writes in stack 
68   ... PLA      × 2
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A, S, and Z&N; and writes in stack
9 bytes 
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
EA   ... NOP      × 2
18       CLC
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 2A    LDA #$2A ;hides 'ROL A'
EA   ... NOP      × 2
18       CLC
10 FA    BPL *-4
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 05    LDX #5
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
20 xx xx JSR @rts15
20 xx xx JSR @rts12× 2
 Requires @rts12, and @rts15; and writes in stack 
08       PHP
A2 FA    LDX #250 ;hides 'NOP'
EA       NOP
E8   ... INX      × 2
D0 FA    BNE *-4
28       PLP
 Clobbers X; requires support for unofficial opcodes; and writes in stack 
08       PHP
A0 FA    LDY #250 ;hides 'NOP'
EA       NOP
C8   ... INY      × 2
D0 FA    BNE *-4
28       PLP
 Clobbers Y; requires support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 05    LDX #5
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A0 05    LDY #5
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
10 bytes 
08       PHP
A6 A6    LDX $A6
A2 04    LDX #4
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 04    LDY #4
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
EA   ... NOP      × 2
08       PHP
28       PLP
20 xx xx JSR @rts14× 2
 Requires @rts12, and @rts14; and writes in stack 
68       PLA
48       PHA
68   ... PLA      × 8
 Clobbers A, S, and Z&N 
48       PHA
20 xx xx JSR @rts12× 3
 Clobbers S; requires @rts12; and writes in stack
11 bytes 
EA   ... NOP      × 2
08       PHP
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
90 FD    BCC *-1
68       PLA
28       PLP
 Writes in stack
12 bytes 
EA   ... NOP      × 2
68       PLA       \ × 5
48       PHA       /
 Clobbers A, and Z&N
14 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
04 04    NOP $04
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
15 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code 
FE 00 02 INC $0200,X
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
 Clobbers Z&N; and requires writable $700-$7FF
20 bytes 
18   ... CLC      × 18
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 18
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 18
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 18
 Requires support for unofficial opcodes
21 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 18
 Not relocatable code


40 cycles

5 bytes 
A9       LDA #13
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A2 05    LDX #5 ;hides 'ORA zp'
EA       NOP
CA       DEX
D0 FB    BNE *-3
 Clobbers A, X, and Z&N 
A0 05    LDY #5 ;hides 'ORA zp'
EA       NOP
88       DEY
D0 FB    BNE *-3
 Clobbers A, Y, and Z&N 
68       PLA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, S, Z&N, C, and V
7 bytes 
EA       NOP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
10 FC    BPL *-2
 Clobbers A, Z&N, C, and V 
EA   ... NOP      × 2
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 07    LDY #7
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
48       PHA
A9       LDA #6
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #6
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
00 00... BRK 0    × 2
20 xx xx JSR @rts14
 Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack 
EA       NOP
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
 Clobbers A, S, Z&N, and C
8 bytes 
48       PHA
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
EA   ... NOP      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
 Clobbers A, Z&N, and C 
08       PHP
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 06    LDX #6
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 06    LDY #6
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
00 00... BRK 0    × 2
08       PHP       \ × 2
28       PLP       /
 Requires dummy interrupt handler; and writes in stack
9 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Writes in stack
10 bytes 
68   ... PLA      × 10
 Clobbers A, S, and Z&N
12 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA       \ × 4
48       PHA       /
 Clobbers A, and Z&N
14 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N
20 bytes 
EA   ... NOP      × 20
 No requirements


41 cycles

5 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C 
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
88       DEY
30 FC    BMI *-2
28       PLP
 Clobbers Y; and writes in stack 
EA       NOP
00 00... BRK 0    × 3
 Requires dummy interrupt handler; and writes in stack
8 bytes 
48       PHA
08       PHP
A2 06    LDX #6
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack
9 bytes 
08       PHP
A6 A6    LDX $A6
A2 06    LDX #6
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
20 xx xx JSR @rts12
20 xx xx JSR @rts14
20 xx xx JSR @rts15
 Requires @rts12, @rts14, and @rts15; and writes in stack 
08       PHP
48       PHA
A9       LDA #0
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Clobbers S; and writes in stack
10 bytes 
08       PHP
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Writes in stack
11 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 8
 Clobbers A, S, and Z&N
12 bytes 
F6 F6    INC $F6,X
68       PLA       \ × 5
48       PHA       /
 Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF
13 bytes 
EA   ... NOP      × 3
68       PLA       \ × 5
48       PHA       /
 Clobbers A, and Z&N
14 bytes 
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp
15 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and V 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
16 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
21 bytes 
18   ... CLC      × 19
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 19
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 19
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 19
 Requires support for unofficial opcodes
22 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 19
 Not relocatable code


42 cycles

5 bytes 
A9       LDA #15
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, S, Z&N, and C; and writes in stack
6 bytes 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C
7 bytes 
EA       NOP
A2 05    LDX #5 ;hides 'ORA zp'
EA       NOP
CA       DEX
D0 FB    BNE *-3
 Clobbers A, X, and Z&N 
EA       NOP
A0 05    LDY #5 ;hides 'ORA zp'
EA       NOP
88       DEY
D0 FB    BNE *-3
 Clobbers A, Y, and Z&N 
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A0 07    LDY #7
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9       LDA #8
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #8
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48   ... PHA      × 2
A0 07    LDY #7
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack 
48       PHA
00 00... BRK 0    × 3
 Clobbers S; requires dummy interrupt handler; and writes in stack
8 bytes 
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
10 FB    BPL *-3
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 3
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 07    LDY #7
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
08       PHP
A2 F8    LDX #248 ;hides 'SED'
E8   ... INX      × 2
D0 FB    BNE *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
88   ... DEY      × 2
30 FB    BMI *-3
28       PLP
 Clobbers Y; and writes in stack 
24 24    BIT $24
00 00... BRK 0    × 3
 Clobbers Z&N, and V; requires dummy interrupt handler; and writes in stack 
85 xx    STA @zptemp
00 00... BRK 0    × 3
 Requires @zptemp, and dummy interrupt handler; and writes in stack 
EA       NOP
00 00... BRK 0    × 2
20 xx xx JSR @rts14
 Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack 
04 04    NOP $04
00 00... BRK 0    × 3
 Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
9 bytes 
20 xx xx JSR @rts14× 3
 Requires @rts12, and @rts14; and writes in stack 
20 xx xx JSR @rts12
20 xx xx JSR @rts15× 2
 Requires @rts12, and @rts15; and writes in stack 
08       PHP
48       PHA
A9       LDA #1
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
EA       NOP
00 00... BRK 0    × 2
08       PHP       \ × 2
28       PLP       /
 Requires dummy interrupt handler; and writes in stack
10 bytes 
EA   ... NOP      × 2
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Writes in stack
11 bytes 
EA       NOP
68   ... PLA      × 10
 Clobbers A, S, and Z&N
12 bytes 
68       PLA       \ × 6
48       PHA       /
 Clobbers A, and Z&N
14 bytes 
F6 F6... INC $F6,X× 7
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
15 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N
21 bytes 
EA   ... NOP      × 21
 No requirements


43 cycles

5 bytes 
A9       LDA #16
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, S, Z&N, and C
6 bytes 
EA   ... NOP      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C 
A2 06    LDX #6
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 06    LDY #6
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 07    LDY #7
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack
8 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, and C; and writes in stack 
EA   ... NOP      × 2
00 00... BRK 0    × 3
 Requires dummy interrupt handler; and writes in stack
9 bytes 
20 xx xx JSR @rts15
20 xx xx JSR @rts14× 2
 Requires @rts12, @rts14, and @rts15; and writes in stack 
08       PHP
48       PHA
A9       LDA #2
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
90 FC    BCC *-2
68       PLA
28       PLP
 Writes in stack
11 bytes 
68       PLA
48       PHA
68   ... PLA      × 9
 Clobbers A, S, and Z&N
13 bytes 
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 8
10 F4    BPL *-10
 Clobbers A, and Z&N
15 bytes 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
16 bytes 
EA   ... NOP      × 2
C5 C5    CMP $C5
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA   ... NOP      × 2
24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and V 
EA   ... NOP      × 2
04 04    NOP $04
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
17 bytes 
EA   ... NOP      × 2
4C xx xx JMP *+3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
22 bytes 
18   ... CLC      × 20
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 20
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 20
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 20
 Requires support for unofficial opcodes
23 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 20
 Not relocatable code


44 cycles

5 bytes 
A9       LDA #17
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
10 FB    BPL *-3
 Clobbers A, Z&N, and C 
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
88       DEY
30 FB    BMI *-3
 Clobbers Y, and Z&N 
48       PHA
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
48       PHA
A9       LDA #10
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #10
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
00 00    BRK 0
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
00 00    BRK 0
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack 
E6 xx    INC @zptemp
00 00... BRK 0    × 3
 Clobbers Z&N; requires @zptemp, and dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
48       PHA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
28       PLP
 Clobbers A, and S; and writes in stack 
48       PHA
08       PHP
A0 88    LDY #136 ;hides 'DEY'
88       DEY
30 FC    BMI *-2
28       PLP
 Clobbers Y, and S; and writes in stack 
EA       NOP
48       PHA
00 00... BRK 0    × 3
 Clobbers S; requires dummy interrupt handler; and writes in stack
9 bytes 
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 04    LDX #4
EA   ... NOP      × 2
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 04    LDY #4
EA   ... NOP      × 2
88       DEY
D0 FB    BNE *-3
28       PLP
 Clobbers Y; and writes in stack 
20 xx xx JSR @rts14
20 xx xx JSR @rts15× 2
 Requires @rts12, @rts14, and @rts15; and writes in stack 
08       PHP
48       PHA
A9       LDA #3
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
00 00    BRK 0
10 FA    BPL *-4
68       PLA
 Clobbers Z&N; requires dummy interrupt handler; and writes in stack 
18       CLC
90 00    BCC *+2
00 00... BRK 0    × 3
 Clobbers C; requires dummy interrupt handler; and writes in stack 
B8       CLV
50 00    BVC *+2
00 00... BRK 0    × 3
 Clobbers V; requires dummy interrupt handler; and writes in stack 
EA       NOP
85 xx    STA @zptemp
00 00... BRK 0    × 3
 Requires @zptemp, and dummy interrupt handler; and writes in stack 
EA   ... NOP      × 2
00 00... BRK 0    × 2
20 xx xx JSR @rts14
 Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack 
EA       NOP
04 04    NOP $04
00 00... BRK 0    × 3
 Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack
10 bytes 
08       PHP
F6 F6    INC $F6,X
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
EA       NOP
20 xx xx JSR @rts14× 3
 Requires @rts12, and @rts14; and writes in stack 
EA       NOP
20 xx xx JSR @rts12
20 xx xx JSR @rts15× 2
 Requires @rts12, and @rts15; and writes in stack 
EA   ... NOP      × 2
00 00... BRK 0    × 2
08       PHP       \ × 2
28       PLP       /
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Clobbers S; and writes in stack
11 bytes 
EA   ... NOP      × 3
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Writes in stack 
68   ... PLA      × 11
 Clobbers A, S, and Z&N
13 bytes 
EA       NOP
68       PLA       \ × 6
48       PHA       /
 Clobbers A, and Z&N
15 bytes 
EA       NOP
F6 F6... INC $F6,X× 7
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
16 bytes 
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N
22 bytes 
EA   ... NOP      × 22
 No requirements


45 cycles

5 bytes 
A9       LDA #18
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
EA       NOP
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, S, Z&N, and C 
68       PLA
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
EA   ... NOP      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C 
EA   ... NOP      × 2
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #11
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #11
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 07    LDY #7
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
F6 F6    INC $F6,X
00 00... BRK 0    × 3
 Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack 
48   ... PHA      × 2
00 00... BRK 0    × 3
 Clobbers S; requires dummy interrupt handler; and writes in stack
9 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68       PLA
28       PLP
 Writes in stack
12 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 9
 Clobbers A, S, and Z&N
14 bytes 
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
68       PLA       \ × 3
48       PHA       /
 Clobbers A, and Z&N
16 bytes 
EA   ... NOP      × 2
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
17 bytes 
EA   ... NOP      × 3
C5 C5    CMP $C5
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA   ... NOP      × 3
24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and V 
EA   ... NOP      × 3
04 04    NOP $04
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
18 bytes 
26 26... ROL $26  × 9
 Clobbers Z&N
23 bytes 
18   ... CLC      × 21
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 21
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 21
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 21
 Requires support for unofficial opcodes
24 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 21
 Not relocatable code


46 cycles

5 bytes 
A2 09    LDX #9
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 09    LDY #9
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9       LDA #19
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28       PLP
 Clobbers A; and writes in stack
8 bytes 
08       PHP
28       PLP
00 00... BRK 0    × 3
 Requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 07    LDY #7
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
08       PHP
A6 A6    LDX $A6
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 07    LDY #7
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #5
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
20 xx xx JSR @rts14
10 F9    BPL *-5
68       PLA
 Clobbers Z&N; requires @rts12, and @rts14; and writes in stack 
EA       NOP
20 xx xx JSR @rts14
20 xx xx JSR @rts15× 2
 Requires @rts12, @rts14, and @rts15; and writes in stack
11 bytes 
08       PHP
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
EA   ... NOP      × 2
18       CLC
10 FA    BPL *-4
68       PLA
28       PLP
 Writes in stack
12 bytes 
EA       NOP
68   ... PLA      × 11
 Clobbers A, S, and Z&N
14 bytes 
EA   ... NOP      × 2
68       PLA       \ × 6
48       PHA       /
 Clobbers A, and Z&N
16 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N
23 bytes 
EA   ... NOP      × 23
 No requirements


47 cycles

5 bytes 
A9       LDA #20
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
68   ... PLA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, S, Z&N, and C
7 bytes 
BA       TSX
68       PLA
9A       TXS
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, X, Z&N, and C; and unsafe for interrupts 
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
EA       NOP
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
F6 F6    INC $F6,X
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9       LDA #13
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #13
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
00 00    BRK 0
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
00 00    BRK 0
A0 88    LDY #136 ;hides 'DEY'
88       DEY
30 FC    BMI *-2
 Clobbers Y, and Z&N; requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48   ... PHA      × 2
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack 
EA       NOP
68       PLA
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
EA       NOP
68       PLA
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
8 bytes 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
10 FB    BPL *-3
 Clobbers A, Z&N, and C 
EA   ... NOP      × 3
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
08       PHP
A2 05    LDX #5 ;hides 'ORA zp'
EA       NOP
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers A, and X; and writes in stack 
08       PHP
A0 05    LDY #5 ;hides 'ORA zp'
EA       NOP
88       DEY
D0 FB    BNE *-3
28       PLP
 Clobbers A, and Y; and writes in stack 
68       PLA
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A, S, and Z&N; and writes in stack
9 bytes 
EA       NOP
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
EA       NOP
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 07    LDY #7
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
F6 F6    INC $F6,X
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9       LDA #6
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
EA       NOP
F6 F6    INC $F6,X
00 00... BRK 0    × 3
 Clobbers Z&N; requires @zptemp, dummy interrupt handler, and writable $00-$FF; and writes in stack 
08       PHP
28       PLP
00 00... BRK 0    × 2
20 xx xx JSR @rts14
 Requires dummy interrupt handler, @rts12, and @rts14; and writes in stack 
48   ... PHA      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
EA       NOP
48   ... PHA      × 2
00 00... BRK 0    × 3
 Clobbers S; requires dummy interrupt handler; and writes in stack
10 bytes 
08       PHP
48       PHA
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
90 FD    BCC *-1
68       PLA
28       PLP
 Writes in stack
12 bytes 
68       PLA
48       PHA
68   ... PLA      × 10
 Clobbers A, S, and Z&N
14 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA       \ × 5
48       PHA       /
 Clobbers A, and Z&N
16 bytes 
E6 xx    INC @zptemp
F6 F6... INC $F6,X× 7
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
17 bytes 
EA   ... NOP      × 3
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
EA   ... NOP      × 2
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 2
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 2
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 2
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 2
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 2
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
18 bytes 
C5 C5    CMP $C5
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
19 bytes 
EA       NOP
26 26... ROL $26  × 9
 Clobbers Z&N
24 bytes 
18   ... CLC      × 22
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 22
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 22
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 22
 Requires support for unofficial opcodes
25 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 22
 Not relocatable code


48 cycles

5 bytes 
A9       LDA #21
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
EA       NOP
A2 09    LDX #9
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 09    LDY #9
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
EA       NOP
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
12 bytes 
68   ... PLA      × 12
 Clobbers A, S, and Z&N
14 bytes 
F6 F6    INC $F6,X
68       PLA       \ × 6
48       PHA       /
 Clobbers A, and Z&N; and requires @zptemp, and writable $00-$FF
15 bytes 
EA   ... NOP      × 3
68       PLA       \ × 6
48       PHA       /
 Clobbers A, and Z&N
16 bytes 
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N
24 bytes 
EA   ... NOP      × 24
 No requirements


49 cycles

4 bytes 
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers Y, and Z&N
5 bytes 
A9       LDA #22
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
90 FC    BCC *-2
 Clobbers A, S, Z&N, and C; and writes in stack 
A2 06    LDX #6
48       PHA
CA       DEX
D0 FC    BNE *-2
 Clobbers X, S, and Z&N; and writes in stack
7 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
24 24    BIT $24
90 FB    BCC *-3
 Clobbers A, Z&N, C, and V 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
90 FB    BCC *-3
 Clobbers A, Z&N, and C; and writes in stack 
A6 A6    LDX $A6
A2 09    LDX #9
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
90 FB    BCC *-3
 Clobbers A, Z&N, and C; and requires @zptemp 
48       PHA
A9       LDA #15
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #15
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
90 FB    BCC *-3
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
EA       NOP
68   ... PLA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, S, Z&N, and C 
48       PHA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28       PLP
 Clobbers A, and S; and writes in stack
8 bytes 
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
26 26    ROL $26
66 26    ROR $26
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C 
08       PHP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28       PLP
 Clobbers A; and writes in stack
9 bytes 
08       PHP
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A0 07    LDY #7
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9       LDA #8
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 07    LDX #7
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A0 07    LDY #7
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack 
48       PHA
08       PHP
28       PLP
00 00... BRK 0    × 3
 Clobbers S; requires dummy interrupt handler; and writes in stack
10 bytes 
08       PHP
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
10 FB    BPL *-3
68       PLA
28       PLP
 Writes in stack
13 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 10
 Clobbers A, S, and Z&N
14 bytes 
68       PLA       \ × 7
48       PHA       /
 Clobbers A, and Z&N
17 bytes 
EA       NOP
E6 xx    INC @zptemp
F6 F6... INC $F6,X× 7
 Clobbers Z&N; and requires @zptemp, and writable $00-$FF
18 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
EA   ... NOP      × 3
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 3
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 3
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 3
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 3
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 3
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
19 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
20 bytes 
EA   ... NOP      × 2
26 26... ROL $26  × 9
 Clobbers Z&N
25 bytes 
18   ... CLC      × 23
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 23
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 23
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 23
 Requires support for unofficial opcodes
26 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 23
 Not relocatable code


50 cycles

5 bytes 
A9       LDA #23
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA       NOP
B0 FB    BCS *-3
 Clobbers A, Z&N, C, and V 
A2 07    LDX #7
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 07    LDY #7
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
7 bytes 
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires @rts12; and writes in stack 
48       PHA
A9       LDA #16
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #16
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68   ... PLA      × 2
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, S, Z&N, and C 
68       PLA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28       PLP
 Clobbers A, S, and Z&N; and writes in stack
8 bytes 
EA   ... NOP      × 2
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
EA   ... NOP      × 2
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C 
EA   ... NOP      × 2
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 06    LDX #6
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 06    LDY #6
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
B0 FC    BCS *-2
68       PLA
28       PLP
 Writes in stack
13 bytes 
EA       NOP
68   ... PLA      × 12
 Clobbers A, S, and Z&N
15 bytes 
68       PLA
48       PHA
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 8
10 F4    BPL *-10
 Clobbers A, and Z&N
17 bytes 
EA       NOP
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N
25 bytes 
EA   ... NOP      × 25
 No requirements


51 cycles

5 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
 Clobbers A, Z&N, C, and V 
A2 09    LDX #9
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N
7 bytes 
20 xx xx JSR @rts12
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C; requires @rts12; and writes in stack 
48       PHA
A9       LDA #17
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #17
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68   ... PLA      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, S, Z&N, and C
8 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
36 36    ROL $36,X
76 36    ROR $36,X
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
10 FB    BPL *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
88       DEY
30 FB    BMI *-3
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
08       PHP
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack
9 bytes 
08       PHP
A6 A6    LDX $A6
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
48       PHA
A9       LDA #10
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
20 xx xx JSR @rts12
00 00... BRK 0    × 3
 Requires dummy interrupt handler, and @rts12; and writes in stack
10 bytes 
00 00    BRK 0
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
68       PLA
28       PLP
 Requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
68       PLA
28       PLP
 Clobbers S; and writes in stack
11 bytes 
08       PHP
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
13 bytes 
68       PLA
48       PHA
68   ... PLA      × 11
 Clobbers A, S, and Z&N
15 bytes 
EA       NOP
68       PLA       \ × 7
48       PHA       /
 Clobbers A, and Z&N
18 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
04 04    NOP $04
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
19 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code 
FE 00 02 INC $0200,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
21 bytes 
EA   ... NOP      × 3
26 26... ROL $26  × 9
 Clobbers Z&N
26 bytes 
18   ... CLC      × 24
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 24
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 24
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 24
 Requires support for unofficial opcodes
27 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 24
 Not relocatable code


52 cycles

5 bytes 
A9       LDA #25
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks 
48       PHA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers Y, S, and Z&N; and writes in stack
6 bytes 
A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers Y, and Z&N 
00 00    BRK 0
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
7 bytes 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
EA       NOP
10 FB    BPL *-3
 Clobbers A, Z&N, C, and V 
EA       NOP
A2 07    LDX #7
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
48       PHA
A9       LDA #18
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #18
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
90 FC    BCC *-2
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
F6 F6    INC $F6,X
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
F6 F6    INC $F6,X
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
08       PHP
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28       PLP
 Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires @rts12; and writes in stack 
00 00... BRK 0    × 4
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
68   ... PLA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
10 FB    BPL *-3
 Clobbers A, S, Z&N, and C 
48   ... PHA      × 2
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28       PLP
 Clobbers A, and S; and writes in stack
9 bytes 
EA   ... NOP      × 3
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; and writes in stack 
18       CLC
A9 4A    LDA #$4A ;hides 'LSR A'
36 36    ROL $36,X
76 36    ROR $36,X
90 F9    BCC *-5
 Clobbers A, Z&N, and C 
EA   ... NOP      × 3
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #11
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
13 bytes 
68   ... PLA      × 13
 Clobbers A, S, and Z&N
16 bytes 
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
68       PLA       \ × 4
48       PHA       /
 Clobbers A, and Z&N
18 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N
26 bytes 
EA   ... NOP      × 26
 No requirements


53 cycles

5 bytes 
A9       LDA #26
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks 
68       PLA
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers A, Y, S, and Z&N
6 bytes 
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
 Clobbers A, Z&N, C, and V 
EA       NOP
A2 09    LDX #9
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA       NOP
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
A9 2A    LDA #$2A ;hides 'ROL A'
00 00    BRK 0
10 FB    BPL *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
7 bytes 
08       PHP
A2 09    LDX #9
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 09    LDY #9
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
20 xx xx JSR @rts14
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack 
48       PHA
A9       LDA #19
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #19
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68       PLA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
90 FC    BCC *-2
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Writes in stack 
68       PLA       \ × 2
48       PHA       /
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C
14 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 11
 Clobbers A, S, and Z&N
16 bytes 
EA   ... NOP      × 2
68       PLA       \ × 7
48       PHA       /
 Clobbers A, and Z&N
18 bytes 
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp
19 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N, and V 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
20 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
22 bytes 
EA   ... NOP      × 4
26 26... ROL $26  × 9
 Clobbers Z&N
27 bytes 
18   ... CLC      × 25
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 25
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 25
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 25
 Requires support for unofficial opcodes
28 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 25
 Not relocatable code


54 cycles

5 bytes 
A9       LDA #27
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
E6 xx    INC @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers Y, and Z&N; and requires @zptemp 
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
10 FB    BPL *-3
 Clobbers A, S, Z&N, and C; and writes in stack 
48       PHA
A2 09    LDX #9
CA       DEX
10 FD    BPL *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
 Clobbers Y, S, and Z&N; and writes in stack 
A0 88    LDY #136 ;hides 'DEY'
68       PLA
88       DEY
30 FB    BMI *-3
 Clobbers A, Y, S, and Z&N
7 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
10 FA    BPL *-4
 Clobbers A, Z&N, and C 
A6 A6    LDX $A6
A2 09    LDX #9
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #20
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #20
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
68   ... PLA      × 2
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28       PLP
 Clobbers A, S, and Z&N; and writes in stack
9 bytes 
08       PHP
BA       TSX
68       PLA
9A       TXS
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28       PLP
 Clobbers A, and X; writes in stack; and unsafe for interrupts 
08       PHP
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
EA       NOP
F6 F6    INC $F6,X
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
EA       NOP
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28       PLP
 Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9       LDA #13
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
EA       NOP
00 00... BRK 0    × 4
 Requires dummy interrupt handler; and writes in stack 
EA       NOP
48   ... PHA      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
EA       NOP
48   ... PHA      × 2
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28       PLP
 Clobbers A, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
10 bytes 
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
10 FB    BPL *-3
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 3
08       PHP
A2 08    LDX #8
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 3
08       PHP
A0 08    LDY #8
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack
11 bytes 
EA       NOP
08       PHP
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
14 bytes 
EA       NOP
68   ... PLA      × 13
 Clobbers A, S, and Z&N
16 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA       \ × 6
48       PHA       /
 Clobbers A, and Z&N
18 bytes 
36 36... ROL $36,X× 9
 Clobbers Z&N
27 bytes 
EA   ... NOP      × 27
 No requirements


55 cycles

5 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C 
A2 F8    LDX #248 ;hides 'SED'
E8       INX
D0 FC    BNE *-2
 Clobbers X, Z&N, and D 
A0 F8    LDY #248 ;hides 'SED'
C8       INY
D0 FC    BNE *-2
 Clobbers Y, Z&N, and D
6 bytes 
F6 F6    INC $F6,X
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48   ... PHA      × 2
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers Y, S, and Z&N; and writes in stack 
A2 06    LDX #6
68       PLA
CA       DEX
D0 FC    BNE *-2
 Clobbers A, X, S, and Z&N 
A0 06    LDY #6
68       PLA
88       DEY
D0 FC    BNE *-2
 Clobbers A, Y, S, and Z&N
7 bytes 
EA   ... NOP      × 2
A2 09    LDX #9
CA       DEX
10 FD    BPL *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #21
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #21
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
08       PHP
A2 09    LDX #9
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 09    LDY #9
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Writes in stack
14 bytes 
68       PLA
48       PHA
68   ... PLA      × 12
 Clobbers A, S, and Z&N
16 bytes 
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 11
10 F1    BPL *-13
 Clobbers A, and Z&N
19 bytes 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
20 bytes 
EA   ... NOP      × 2
C5 C5    CMP $C5
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA   ... NOP      × 2
24 24    BIT $24
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N, and V 
EA   ... NOP      × 2
04 04    NOP $04
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
21 bytes 
EA   ... NOP      × 2
4C xx xx JMP *+3
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
22 bytes 
26 26    ROL $26
66 26    ROR $26
26 26... ROL $26  × 9
 Clobbers Z&N
28 bytes 
18   ... CLC      × 26
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 26
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 26
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 26
 Requires support for unofficial opcodes
29 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 26
 Not relocatable code


56 cycles

5 bytes 
A2 0B    LDX #11
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 0B    LDY #11
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9       LDA #29
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
28       PLP
 Clobbers Y; and writes in stack
7 bytes 
E6 xx    INC @zptemp
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
 Clobbers A, Z&N, C, and V; and requires @zptemp 
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack 
48       PHA
A9       LDA #22
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #22
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
10 FB    BPL *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
10 FA    BPL *-4
 Clobbers A, Z&N, and C 
48       PHA
08       PHP
A2 09    LDX #9
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack
9 bytes 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
90 FB    BCC *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
24 24    BIT $24
90 FB    BCC *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 06    LDX #6
C5 C5    CMP $C5
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
48       PHA
A9       LDA #15
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Clobbers S; and writes in stack
10 bytes 
08       PHP
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Writes in stack
14 bytes 
68   ... PLA      × 14
 Clobbers A, S, and Z&N
16 bytes 
68       PLA       \ × 8
48       PHA       /
 Clobbers A, and Z&N
19 bytes 
EA       NOP
36 36... ROL $36,X× 9
 Clobbers Z&N
28 bytes 
EA   ... NOP      × 28
 No requirements


57 cycles

5 bytes 
A9       LDA #30
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C 
A2 08    LDX #8
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 08    LDY #8
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9       LDA #23
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #23
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA       NOP
B0 FB    BCS *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA       NOP
B0 FB    BCS *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 07    LDX #7
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 07    LDY #7
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12; and writes in stack 
08       PHP
48       PHA
A9       LDA #16
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
EA   ... NOP      × 2
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Writes in stack
15 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 12
 Clobbers A, S, and Z&N
17 bytes 
EA       NOP
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 11
10 F1    BPL *-13
 Clobbers A, and Z&N
20 bytes 
C5 C5    CMP $C5
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
85 xx    STA @zptemp
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
21 bytes 
4C xx xx JMP *+3
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
22 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  × 9
 Clobbers Z&N
29 bytes 
18   ... CLC      × 27
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 27
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 27
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 27
 Requires support for unofficial opcodes
30 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 27
 Not relocatable code


58 cycles

5 bytes 
A9       LDA #31
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
EA       NOP
A2 0B    LDX #11
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 0B    LDY #11
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; and writes in stack
7 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 09    LDX #9
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
20 xx xx JSR @rts12
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; requires @rts12; and writes in stack 
08       PHP
48       PHA
A9       LDA #17
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
10 FB    BPL *-3
68       PLA
28       PLP
 Writes in stack
15 bytes 
EA       NOP
68   ... PLA      × 14
 Clobbers A, S, and Z&N
17 bytes 
EA       NOP
68       PLA       \ × 8
48       PHA       /
 Clobbers A, and Z&N
20 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N
29 bytes 
EA   ... NOP      × 29
 No requirements


59 cycles

5 bytes 
A9       LDA #32
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
 Clobbers A, Z&N, and C; and writes in stack 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C 
48       PHA
A2 0B    LDX #11
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 0B    LDY #11
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack 
68       PLA
A2 F8    LDX #248 ;hides 'SED'
E8       INX
D0 FC    BNE *-2
 Clobbers A, X, S, Z&N, and D 
68       PLA
A0 F8    LDY #248 ;hides 'SED'
C8       INY
D0 FC    BNE *-2
 Clobbers A, Y, S, Z&N, and D
7 bytes 
EA   ... NOP      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C 
A6 A6    LDX $A6
A2 0B    LDX #11
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 0B    LDY #11
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #25
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #25
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
08       PHP
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
28       PLP
 Clobbers Y, and S; and writes in stack
8 bytes 
08       PHP
A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
28       PLP
 Clobbers Y; and writes in stack 
00 00    BRK 0
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
00 00    BRK 0
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
EA       NOP
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
EA       NOP
10 FB    BPL *-3
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 07    LDX #7
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
48       PHA
A9       LDA #18
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
F6 F6    INC $F6,X
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12; and writes in stack 
08       PHP
28       PLP
00 00... BRK 0    × 4
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Clobbers S; and writes in stack
11 bytes 
EA   ... NOP      × 3
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Writes in stack
15 bytes 
68       PLA
48       PHA
68   ... PLA      × 13
 Clobbers A, S, and Z&N
17 bytes 
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
20 bytes 
E6 xx    INC @zptemp
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp
21 bytes 
EA       NOP
C5 C5    CMP $C5
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
EA   ... NOP      × 2
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA   ... NOP      × 2
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA   ... NOP      × 2
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA   ... NOP      × 2
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA   ... NOP      × 2
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA   ... NOP      × 2
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
22 bytes 
EA       NOP
4C xx xx JMP *+3
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
23 bytes 
EA       NOP
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  × 9
 Clobbers Z&N
30 bytes 
18   ... CLC      × 28
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 28
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 28
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 28
 Requires support for unofficial opcodes
31 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 28
 Not relocatable code


60 cycles

5 bytes 
A9       LDA #33
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
68       PLA
A2 0B    LDX #11
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 0B    LDY #11
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
EA   ... NOP      × 2
A2 0B    LDX #11
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 0B    LDY #11
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
E6 xx    INC @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C; and requires @zptemp 
48       PHA
A9       LDA #26
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #26
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
EA       NOP
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
EA       NOP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
48       PHA
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
EA       NOP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C 
08       PHP
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 09    LDX #9
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
00 00    BRK 0
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
9 bytes 
20 xx xx JSR @rts14
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack 
08       PHP
48       PHA
A9       LDA #19
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
28       PLP
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Writes in stack
15 bytes 
68   ... PLA      × 15
 Clobbers A, S, and Z&N
18 bytes 
EA   ... NOP      × 2
68       PLA       \ × 8
48       PHA       /
 Clobbers A, and Z&N
20 bytes 
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N
30 bytes 
EA   ... NOP      × 30
 No requirements


61 cycles

5 bytes 
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9       LDA #34
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
7 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
 Clobbers A, Z&N, and C; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
E6 xx    INC @zptemp
90 FB    BCC *-3
 Clobbers A, Z&N, and C; and requires @zptemp 
48       PHA
A9       LDA #27
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #27
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
EA       NOP
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C
8 bytes 
EA   ... NOP      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C 
08       PHP
E6 xx    INC @zptemp
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
28       PLP
 Clobbers Y; requires @zptemp; and writes in stack 
48   ... PHA      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack 
48       PHA
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
28       PLP
 Clobbers A, and S; and writes in stack 
48       PHA
08       PHP
A2 09    LDX #9
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
10 FA    BPL *-4
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A6 A6    LDX $A6
A2 09    LDX #9
CA       DEX
10 FD    BPL *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 09    LDY #9
88       DEY
10 FD    BPL *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #20
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
08       PHP
EA       NOP
F6 F6    INC $F6,X
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
EA       NOP
08       PHP
28       PLP
00 00... BRK 0    × 4
 Requires dummy interrupt handler; and writes in stack 
EA       NOP
48   ... PHA      × 2
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Clobbers S; and writes in stack
12 bytes 
08       PHP
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
10 FB    BPL *-3
68       PLA
28       PLP
 Writes in stack
16 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 13
 Clobbers A, S, and Z&N
18 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA       \ × 7
48       PHA       /
 Clobbers A, and Z&N
21 bytes 
EA       NOP
E6 xx    INC @zptemp
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF
22 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
23 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
24 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  × 9
 Clobbers Z&N
31 bytes 
18   ... CLC      × 29
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 29
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 29
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 29
 Requires support for unofficial opcodes
32 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 29
 Not relocatable code


62 cycles

5 bytes 
A2 88    LDX #136 ;hides 'DEY'
CA       DEX
30 FC    BMI *-2
 Clobbers X, Y, and Z&N 
A9       LDA #35
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
00 00    BRK 0
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
 Clobbers Y, and Z&N; requires dummy interrupt handler; and writes in stack
7 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, and C; and writes in stack 
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 F8    LDX #248 ;hides 'SED'
E8       INX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 F8    LDY #248 ;hides 'SED'
C8       INY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
68       PLA
48       PHA
A2 F8    LDX #248 ;hides 'SED'
E8       INX
D0 FC    BNE *-2
 Clobbers A, X, Z&N, and D 
68       PLA
48       PHA
A0 F8    LDY #248 ;hides 'SED'
C8       INY
D0 FC    BNE *-2
 Clobbers A, Y, Z&N, and D 
A2 0B    LDX #11
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A0 0B    LDY #11
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
EA       NOP
68       PLA
A2 0B    LDX #11
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
EA       NOP
68       PLA
A0 0B    LDY #11
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
8 bytes 
EA   ... NOP      × 3
A2 0B    LDX #11
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 0B    LDY #11
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
9 bytes 
08       PHP
48       PHA
A9       LDA #21
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
EA       NOP
08       PHP
28       PLP
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Writes in stack
16 bytes 
EA       NOP
68   ... PLA      × 15
 Clobbers A, S, and Z&N
18 bytes 
68       PLA
48       PHA
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 11
10 F1    BPL *-13
 Clobbers A, and Z&N
21 bytes 
EA       NOP
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N
31 bytes 
EA   ... NOP      × 31
 No requirements


63 cycles

5 bytes 
A9       LDA #36
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks 
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; and writes in stack
6 bytes 
EA       NOP
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires @zptemp 
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes
7 bytes 
38       SEC
A9 0C    LDA #12
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
A9 0A    LDA #$0A ;hides 'ASL A'
4C xx xx JMP *+3
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and not relocatable code 
08       PHP
A2 0B    LDX #11
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0B    LDY #11
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9       LDA #29
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #29
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68   ... PLA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C
8 bytes 
EA   ... NOP      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
 Clobbers A, Z&N, and C; and writes in stack
9 bytes 
EA   ... NOP      × 4
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C 
E6 xx    INC @zptemp
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
 Clobbers Z&N, C, and V; requires @zptemp; and writes in stack 
08       PHP
E6 xx    INC @zptemp
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
28       PLP
 Clobbers A; requires @zptemp; and writes in stack 
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack 
08       PHP
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
28       PLP
 Clobbers A; requires @rts12, and @rts14; and writes in stack 
08       PHP
48       PHA
A9       LDA #22
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
00 00... BRK 0    × 2
10 F8    BPL *-6
 Clobbers A, and Z&N; requires dummy interrupt handler; and writes in stack 
EA       NOP
48   ... PHA      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack 
EA       NOP
48       PHA
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
28       PLP
 Clobbers A, and S; and writes in stack 
48   ... PHA      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
00 00    BRK 0
10 FB    BPL *-3
68       PLA
 Clobbers S, Z&N, and C; requires dummy interrupt handler; and writes in stack
10 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
10 FA    BPL *-4
28       PLP
 Clobbers A; and writes in stack
11 bytes 
08       PHP
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
08       PHP
28       PLP
90 FB    BCC *-3
68       PLA
28       PLP
 Writes in stack
16 bytes 
68       PLA
48       PHA
68   ... PLA      × 14
 Clobbers A, S, and Z&N
18 bytes 
68       PLA       \ × 9
48       PHA       /
 Clobbers A, and Z&N
22 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
23 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
25 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  × 9
 Clobbers Z&N
32 bytes 
18   ... CLC      × 30
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 30
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 30
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 30
 Requires support for unofficial opcodes
33 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 30
 Not relocatable code


64 cycles

5 bytes 
A9       LDA #37
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A2 09    LDX #9
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 09    LDY #9
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
7 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA   ... NOP      × 2
B0 FA    BCS *-4
 Clobbers A, Z&N, C, and V 
48       PHA
A9       LDA #30
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #30
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
18       CLC
10 FA    BPL *-4
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, and C; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
18       CLC
10 F9    BPL *-5
 Clobbers A, Z&N, and C 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 08    LDX #8
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 08    LDY #8
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
08       PHP
48       PHA
A9       LDA #23
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA       NOP
B0 FB    BCS *-3
68       PLA
28       PLP
 Writes in stack
16 bytes 
68   ... PLA      × 16
 Clobbers A, S, and Z&N
19 bytes 
EA       NOP
68       PLA
48       PHA
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 11
10 F1    BPL *-13
 Clobbers A, and Z&N
22 bytes 
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N
32 bytes 
EA   ... NOP      × 32
 No requirements


65 cycles

5 bytes 
A9       LDA #38
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; and writes in stack 
A2 08    LDX #8
48       PHA
CA       DEX
D0 FC    BNE *-2
 Clobbers X, S, and Z&N; and writes in stack 
A0 08    LDY #8
48       PHA
88       DEY
D0 FC    BNE *-2
 Clobbers Y, S, and Z&N; and writes in stack 
68       PLA
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
EA   ... NOP      × 2
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires @zptemp 
48       PHA
A9       LDA #31
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #31
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes
8 bytes 
EA       NOP
38       SEC
A9 0C    LDA #12
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
4C xx xx JMP *+3
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and not relocatable code 
EA       NOP
08       PHP
A2 0B    LDX #11
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 0B    LDY #11
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts15
18       CLC
10 F9    BPL *-5
 Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack 
48       PHA
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
08       PHP
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack 
00 00... BRK 0    × 2
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
EA       NOP
68   ... PLA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C 
48       PHA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
28       PLP
 Clobbers A, and S; and writes in stack
9 bytes 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
28       PLP
 Writes in stack 
26 26    ROL $26
66 26    ROR $26
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C
17 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 14
 Clobbers A, S, and Z&N
19 bytes 
EA       NOP
68       PLA       \ × 9
48       PHA       /
 Clobbers A, and Z&N
22 bytes 
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp
23 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N, and V 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
24 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
26 bytes 
26 26    ROL $26   \ × 2
66 26    ROR $26   /
26 26... ROL $26  × 9
 Clobbers Z&N
33 bytes 
18   ... CLC      × 31
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 31
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 31
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 31
 Requires support for unofficial opcodes
34 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 31
 Not relocatable code


66 cycles

5 bytes 
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 0D    LDY #13
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9       LDA #39
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; and writes in stack
7 bytes 
48       PHA
A9       LDA #32
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #32
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
38       SEC
A9 09    LDA #9
EA       NOP
E9 01    SBC #1
D0 FA    BNE *-4
 Clobbers A, Z&N, C, and V 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
28       PLP
 Clobbers A; and writes in stack 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires @zptemp 
04 04    NOP $04
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes 
68   ... PLA      × 2
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C 
48       PHA
08       PHP
A2 0B    LDX #11
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 0B    LDY #11
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
EA   ... NOP      × 2
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C 
08       PHP
A6 A6    LDX $A6
A2 0B    LDX #11
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 0B    LDY #11
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #25
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
00 00    BRK 0
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
28       PLP
 Requires dummy interrupt handler; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$EA'
EA       NOP ;first loop only
EA       NOP
10 FB    BPL *-3
68       PLA
28       PLP
 Writes in stack
17 bytes 
EA       NOP
68   ... PLA      × 16
 Clobbers A, S, and Z&N
19 bytes 
68       PLA
48       PHA
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
22 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N
33 bytes 
EA   ... NOP      × 33
 No requirements


67 cycles

5 bytes 
A9       LDA #40
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; and writes in stack
7 bytes 
BA       TSX
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
D0 FC    BNE *-2
9A       TXS
 Clobbers A, X, Z&N, and C; and writes in stack 
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
F6 F6    INC $F6,X
90 FB    BCC *-3
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
A0 06    LDY #6
F6 F6    INC $F6,X
88       DEY
D0 FB    BNE *-3
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9       LDA #33
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #33
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A2 06    LDX #6
48   ... PHA      × 2
CA       DEX
D0 FB    BNE *-3
 Clobbers X, S, and Z&N; and writes in stack 
A0 06    LDY #6
48   ... PHA      × 2
88       DEY
D0 FB    BNE *-3
 Clobbers Y, S, and Z&N; and writes in stack 
A2 06    LDX #6
EA       NOP
68       PLA
CA       DEX
D0 FB    BNE *-3
 Clobbers A, X, S, and Z&N 
A0 06    LDY #6
EA       NOP
68       PLA
88       DEY
D0 FB    BNE *-3
 Clobbers A, Y, S, and Z&N 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and requires @zptemp 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and requires support for unofficial opcodes
8 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
90 FA    BCC *-4
 Clobbers A, Z&N, and C 
A6 A6    LDX $A6
A2 09    LDX #9
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 09    LDY #9
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
9 bytes 
98       TYA
48       PHA
A0 0B    LDY #11
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
 Clobbers A, and Z&N; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 0B    LDX #11
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 0B    LDY #11
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
E6 xx    INC @zptemp
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, and C; requires @zptemp; and writes in stack 
08       PHP
E6 xx    INC @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
28       PLP
 Clobbers A; requires @zptemp; and writes in stack 
08       PHP
48       PHA
A9       LDA #26
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
EA       NOP
48       PHA
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
EA       NOP
08       PHP
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack 
EA       NOP
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
EA       NOP
48       PHA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
28       PLP
 Clobbers A, and S; and writes in stack
10 bytes 
08       PHP
48       PHA
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
28       PLP
 Writes in stack
17 bytes 
68       PLA
48       PHA
68   ... PLA      × 15
 Clobbers A, S, and Z&N
19 bytes 
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
23 bytes 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
24 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
25 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
26 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  × 9
 Clobbers Z&N
34 bytes 
18   ... CLC      × 32
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 32
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 32
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 32
 Requires support for unofficial opcodes
35 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 32
 Not relocatable code


68 cycles

5 bytes 
A9       LDA #41
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
EA       NOP
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 0D    LDY #13
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
38       SEC
A9 0D    LDA #13
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
08       PHP
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9       LDA #34
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #34
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
00 00    BRK 0
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
EA       NOP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
E6 xx    INC @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires @zptemp
9 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9       LDA #27
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
EA       NOP
04 04    NOP $04
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes 
EA       NOP
68   ... PLA      × 2
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C
10 bytes 
EA   ... NOP      × 3
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C 
48       PHA
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
28       PLP
 Clobbers S; and writes in stack
11 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
10 FA    BPL *-4
68       PLA
28       PLP
 Writes in stack
17 bytes 
68   ... PLA      × 17
 Clobbers A, S, and Z&N
20 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA       \ × 8
48       PHA       /
 Clobbers A, and Z&N
23 bytes 
EA       NOP
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N
34 bytes 
EA   ... NOP      × 34
 No requirements


69 cycles

5 bytes 
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
 Clobbers Y, and Z&N 
A2 0A    LDX #10 ;hides 'ASL A'
CA       DEX
D0 FC    BNE *-2
 Clobbers A, X, Z&N, and C 
A9       LDA #42
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
48       PHA
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack
7 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
10 FA    BPL *-4
 Clobbers A, Z&N, and C; and writes in stack 
A6 A6    LDX $A6
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
08       PHP
A2 88    LDX #136 ;hides 'DEY'
CA       DEX
30 FC    BMI *-2
28       PLP
 Clobbers X, and Y; and writes in stack 
48       PHA
A9       LDA #35
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #35
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
00 00    BRK 0
08       PHP
A0 88    LDY #136 ;hides 'DEY'
30 FD    BMI *-1
28       PLP
 Clobbers Y; requires dummy interrupt handler; and writes in stack 
EA       NOP
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and requires @zptemp 
EA       NOP
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and requires support for unofficial opcodes
9 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
68       PLA
28       PLP
 Writes in stack 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
36 36    ROL $36,X
76 36    ROR $36,X
90 F9    BCC *-5
 Clobbers A, Z&N, and C
18 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 15
 Clobbers A, S, and Z&N
20 bytes 
EA       NOP
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
24 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
25 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
26 bytes 
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
35 bytes 
18   ... CLC      × 33
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 33
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 33
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 33
 Requires support for unofficial opcodes
36 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 33
 Not relocatable code


70 cycles

5 bytes 
A9       LDA #43
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
68       PLA
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 0D    LDY #13
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
EA   ... NOP      × 2
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 0D    LDY #13
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #36
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #36
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
EA       NOP
38       SEC
A9 0D    LDA #13
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
EA       NOP
08       PHP
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires @zptemp; and writes in stack 
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires @zptemp 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires @zptemp; and writes in stack 
20 xx xx JSR @rts15
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires support for unofficial opcodes; and writes in stack 
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack 
EA       NOP
00 00    BRK 0
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 0C    LDA #12
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
4C xx xx JMP *+3
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; writes in stack; and not relocatable code 
08       PHP
38       SEC
A9 0C    LDA #12
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
4C xx xx JMP *+3
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and not relocatable code 
08       PHP
48       PHA
A9       LDA #29
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
68       PLA
48       PHA
68   ... PLA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C
10 bytes 
EA   ... NOP      × 2
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
A5 A5    LDA $A5
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
90 FA    BCC *-4
 Clobbers A, Z&N, and C
11 bytes 
08       PHP
E6 xx    INC @zptemp
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
28       PLP
 Requires @zptemp; and writes in stack 
08       PHP
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
68       PLA
28       PLP
 Requires @rts12, and @rts14; and writes in stack 
48       PHA
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
00 00... BRK 0    × 2
10 F8    BPL *-6
68       PLA
 Clobbers Z&N; requires dummy interrupt handler; and writes in stack 
EA       NOP
48       PHA
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
28       PLP
 Clobbers S; and writes in stack
12 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
10 FA    BPL *-4
68       PLA
28       PLP
 Writes in stack
18 bytes 
EA       NOP
68   ... PLA      × 17
 Clobbers A, S, and Z&N
20 bytes 
68       PLA       \ × 10
48       PHA       /
 Clobbers A, and Z&N
24 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N
35 bytes 
EA   ... NOP      × 35
 No requirements


71 cycles

5 bytes 
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9       LDA #44
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C
7 bytes 
48       PHA
A9       LDA #37
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #37
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
08       PHP
A2 09    LDX #9
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 09    LDY #9
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA   ... NOP      × 2
B0 FA    BCS *-4
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA   ... NOP      × 2
B0 FA    BCS *-4
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9       LDA #30
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
68       PLA
28       PLP
 Writes in stack
18 bytes 
68       PLA
48       PHA
68   ... PLA      × 16
 Clobbers A, S, and Z&N
21 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
24 bytes 
E6 xx    INC @zptemp
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp
25 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
26 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
27 bytes 
EA       NOP
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
36 bytes 
18   ... CLC      × 34
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 34
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 34
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 34
 Requires support for unofficial opcodes
37 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 34
 Not relocatable code


72 cycles

5 bytes 
A9       LDA #45
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
48       PHA
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
 Clobbers Y, S, and Z&N; and writes in stack 
48       PHA
A2 0A    LDX #10 ;hides 'ASL A'
CA       DEX
D0 FC    BNE *-2
 Clobbers A, X, S, Z&N, and C; and writes in stack
7 bytes 
A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
 Clobbers Y, and Z&N 
A6 A6    LDX $A6
A2 0A    LDX #10 ;hides 'ASL A'
CA       DEX
D0 FC    BNE *-2
 Clobbers A, X, Z&N, and C 
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
48       PHA
A9       LDA #38
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #38
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
EA       NOP
68       PLA
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N
8 bytes 
EA   ... NOP      × 3
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
00 00    BRK 0
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
68       PLA
38       SEC
A9 0D    LDA #13
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, S, Z&N, C, and V 
48   ... PHA      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; and writes in stack 
48       PHA
08       PHP
A2 88    LDX #136 ;hides 'DEY'
CA       DEX
30 FC    BMI *-2
28       PLP
 Clobbers X, Y, and S; and writes in stack
9 bytes 
EA   ... NOP      × 2
38       SEC
A9 0D    LDA #13
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
98       TYA
48       PHA
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
 Clobbers A, and Z&N; and writes in stack 
08       PHP
A2 08    LDX #8
C5 C5    CMP $C5
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 08    LDY #8
C5 C5    CMP $C5
88       DEY
D0 FB    BNE *-3
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires @zptemp; and writes in stack 
EA       NOP
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires @zptemp 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires @zptemp; and writes in stack 
08       PHP
48       PHA
A9       LDA #31
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires support for unofficial opcodes; and writes in stack 
EA       NOP
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack
10 bytes 
EA       NOP
48       PHA
38       SEC
A9 0C    LDA #12
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
4C xx xx JMP *+3
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; writes in stack; and not relocatable code 
EA       NOP
08       PHP
38       SEC
A9 0C    LDA #12
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
4C xx xx JMP *+3
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and not relocatable code 
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts15
18       CLC
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack 
08       PHP
48       PHA
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
B0 FC    BCS *-2
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack 
00 00... BRK 0    × 2
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
D0 FD    BNE *-1
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
68       PLA
28       PLP
 Clobbers S; and writes in stack 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C
11 bytes 
08       PHP
28       PLP
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
28       PLP
 Writes in stack 
A5 A5    LDA $A5
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
36 36    ROL $36,X
76 36    ROR $36,X
90 F9    BCC *-5
 Clobbers A, Z&N, and C
18 bytes 
68   ... PLA      × 18
 Clobbers A, S, and Z&N
21 bytes 
EA       NOP
68       PLA       \ × 10
48       PHA       /
 Clobbers A, and Z&N
24 bytes 
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N
36 bytes 
EA   ... NOP      × 36
 No requirements


73 cycles

5 bytes 
A9       LDA #46
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
EA       NOP
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes
7 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C 
08       PHP
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0D    LDY #13
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9       LDA #39
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #39
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
9 bytes 
08       PHP
48       PHA
A9       LDA #32
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, and C; requires @zptemp; and writes in stack 
48       PHA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
28       PLP
 Clobbers A, and S; requires @zptemp; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, and C; requires support for unofficial opcodes; and writes in stack 
48       PHA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
28       PLP
 Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
10 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
68       PLA
28       PLP
 Writes in stack
19 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 16
 Clobbers A, S, and Z&N
21 bytes 
68       PLA       \ × 2
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
25 bytes 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF
26 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
27 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
28 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
37 bytes 
18   ... CLC      × 35
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 35
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 35
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 35
 Requires support for unofficial opcodes
38 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 35
 Not relocatable code


74 cycles

5 bytes 
A9       LDA #47
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
48       PHA
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #40
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #40
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C
9 bytes 
08       PHP
BA       TSX
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
D0 FC    BNE *-2
9A       TXS
28       PLP
 Clobbers A, and X; and writes in stack 
08       PHP
A2 0C    LDX #12
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
F6 F6    INC $F6,X
90 FB    BCC *-3
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
F6 F6    INC $F6,X
90 FB    BCC *-3
28       PLP
 Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
A0 06    LDY #6
F6 F6    INC $F6,X
88       DEY
D0 FB    BNE *-3
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9       LDA #33
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
08       PHP
A2 09    LDX #9
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 09    LDY #9
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y, and S; and writes in stack 
68       PLA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
28       PLP
 Clobbers A, S, and Z&N; requires @zptemp; and writes in stack 
68       PLA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
28       PLP
 Clobbers A, S, and Z&N; requires support for unofficial opcodes; and writes in stack
10 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
90 FA    BCC *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
90 FA    BCC *-4
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 08    LDX #8
C5 C5    CMP $C5
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 08    LDY #8
C5 C5    CMP $C5
88       DEY
D0 FB    BNE *-3
28       PLP
 Clobbers Y; and writes in stack
11 bytes 
48       PHA
98       TYA
48       PHA
A0 0B    LDY #11
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
E6 xx    INC @zptemp
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
68       PLA
28       PLP
 Requires @zptemp; and writes in stack 
EA       NOP
08       PHP
48       PHA
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
B0 FC    BCS *-2
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack 
EA       NOP
48       PHA
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
68       PLA
28       PLP
 Clobbers S; and writes in stack
12 bytes 
EA       NOP
08       PHP
28       PLP
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
30 FC    BMI *-2
68       PLA
28       PLP
 Writes in stack
19 bytes 
EA       NOP
68   ... PLA      × 18
 Clobbers A, S, and Z&N
21 bytes 
68       PLA
48       PHA
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
25 bytes 
EA       NOP
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N
37 bytes 
EA   ... NOP      × 37
 No requirements


75 cycles

5 bytes 
A9       LDA #48
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
68       PLA
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
EA   ... NOP      × 2
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #41
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #41
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
EA       NOP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C
8 bytes 
EA   ... NOP      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C 
EA       NOP
08       PHP
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 0D    LDY #13
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 0D    LDA #13
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 0D    LDA #13
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9       LDA #34
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
00 00    BRK 0
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
10 bytes 
E6 xx    INC @zptemp
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires @zptemp; and writes in stack 
EA       NOP
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, and C; requires support for unofficial opcodes; and writes in stack
11 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
68       PLA
28       PLP
 Writes in stack
19 bytes 
68       PLA
48       PHA
68   ... PLA      × 17
 Clobbers A, S, and Z&N
22 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA       \ × 9
48       PHA       /
 Clobbers A, and Z&N
26 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
27 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
29 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
38 bytes 
18   ... CLC      × 36
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 36
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 36
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 36
 Requires support for unofficial opcodes
39 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 36
 Not relocatable code


76 cycles

5 bytes 
A2 0F    LDX #15
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9       LDA #49
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks 
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08       PHP ;first loop only
30 FC    BMI *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack
7 bytes 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
A2 0A    LDX #10 ;hides 'ASL A'
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers A, and X; and writes in stack 
48       PHA
A9       LDA #42
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #42
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
00 00    BRK 0
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
8 bytes 
E6 xx    INC @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires @zptemp 
04 04    NOP $04
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
00 00    BRK 0
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
EA       NOP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack 
48       PHA
08       PHP
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack
9 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack 
EA       NOP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
10 FA    BPL *-4
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A6 A6    LDX $A6
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
48       PHA
A9       LDA #35
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
08       PHP
28       PLP
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
68       PLA
28       PLP
 Writes in stack
19 bytes 
68   ... PLA      × 19
 Clobbers A, S, and Z&N
22 bytes 
EA       NOP
68       PLA
48       PHA
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
26 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N
38 bytes 
EA   ... NOP      × 38
 No requirements


77 cycles

5 bytes 
A9       LDA #50
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
7 bytes 
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9       LDA #43
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #43
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A2 0A    LDX #10 ;hides 'ASL A'
CA       DEX
D0 FC    BNE *-2
03 xx    SLO (@ptrtemp,X)
 Clobbers A, X, Z&N, and C; and requires @ptrtemp, and support for unofficial opcodes 
A0 0A    LDY #10 ;hides 'ASL A'
88       DEY
D0 FC    BNE *-2
13 xx    SLO (@ptrtemp,Y)
 Clobbers A, Y, Z&N, and C; and requires @ptrtemp, and support for unofficial opcodes 
48   ... PHA      × 2
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48   ... PHA      × 2
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack 
EA       NOP
68       PLA
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
EA       NOP
68       PLA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N 
68       PLA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V; and requires support for unofficial opcodes
8 bytes 
EA   ... NOP      × 3
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts14
90 FA    BCC *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack 
EA   ... NOP      × 2
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
EA       NOP
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C
9 bytes 
EA   ... NOP      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C 
98       TYA
48       PHA
A0 0D    LDY #13
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
 Clobbers A, and Z&N; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 0D    LDY #13
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #36
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
EA       NOP
48       PHA
38       SEC
A9 0D    LDA #13
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
EA       NOP
08       PHP
38       SEC
A9 0D    LDA #13
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
68       PLA
28       PLP
 Requires @zptemp; and writes in stack 
20 xx xx JSR @rts15
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack 
EA       NOP
00 00    BRK 0
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 0C    LDA #12
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
20 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 17
 Clobbers A, S, and Z&N
22 bytes 
68       PLA       \ × 11
48       PHA       /
 Clobbers A, and Z&N
26 bytes 
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp
27 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N, and V 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
28 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
30 bytes 
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X
76 36    ROR $36,X
26 26... ROL $26  × 9
 Clobbers Z&N
39 bytes 
18   ... CLC      × 37
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 37
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 37
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 37
 Requires support for unofficial opcodes
40 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 37
 Not relocatable code


78 cycles

5 bytes 
A9       LDA #51
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A2 0B    LDX #11
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 0B    LDY #11
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N 
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08       PHP ;first loop only
30 FC    BMI *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack
7 bytes 
38       SEC
A9 0F    LDA #15
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
08       PHP
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9       LDA #44
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #44
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack
9 bytes 
08       PHP
48       PHA
A9       LDA #37
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA   ... NOP      × 2
B0 FA    BCS *-4
68       PLA
28       PLP
 Writes in stack
20 bytes 
EA       NOP
68   ... PLA      × 19
 Clobbers A, S, and Z&N
23 bytes 
68       PLA
48       PHA
36 36    ROL $36,X
76 36    ROR $36,X
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
26 bytes 
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
39 bytes 
EA   ... NOP      × 39
 No requirements


79 cycles

5 bytes 
A9       LDA #52
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks 
A0 88    LDY #136 ;hides 'DEY'
48       PHA
30 FC    BMI *-2
 Clobbers Y, S, and Z&N; and writes in stack
6 bytes 
A0 88    LDY #136 ;hides 'DEY'
C5 C5    CMP $C5
30 FB    BMI *-3
 Clobbers Y, Z&N, and C 
A0 88    LDY #136 ;hides 'DEY'
24 24    BIT $24
30 FB    BMI *-3
 Clobbers Y, Z&N, and V 
A0 88    LDY #136 ;hides 'DEY'
A5 A5    LDA $A5
30 FB    BMI *-3
 Clobbers A, Y, and Z&N 
A0 88    LDY #136 ;hides 'DEY'
A6 A6    LDX $A6
30 FB    BMI *-3
 Clobbers X, Y, and Z&N 
A0 88    LDY #136 ;hides 'DEY'
85 xx    STA @zptemp
30 FB    BMI *-3
 Clobbers Y, and Z&N; and requires @zptemp 
A0 88    LDY #136 ;hides 'DEY'
04 04    NOP $04
30 FB    BMI *-3
 Clobbers Y, and Z&N; and requires support for unofficial opcodes 
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack 
48       PHA
A2 0F    LDX #15
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack
7 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
 Clobbers A, Z&N, C, and V 
A6 A6    LDX $A6
A2 0F    LDX #15
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires @zptemp 
48       PHA
A9       LDA #45
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #45
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes
8 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
08       PHP
28       PLP
18       CLC
10 F9    BPL *-5
 Clobbers A, Z&N, and C; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
4C xx xx JMP *+3
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C; and not relocatable code 
68   ... PLA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C 
48       PHA
08       PHP
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
28       PLP
 Clobbers Y, and S; and writes in stack 
48       PHA
08       PHP
A2 0A    LDX #10 ;hides 'ASL A'
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers A, X, and S; and writes in stack
9 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 4
90 F9    BCC *-5
 Clobbers A, Z&N, and C 
08       PHP
A4 A4    LDY $A4
A0 88    LDY #136 ;hides 'DEY'
EA       NOP
30 FC    BMI *-2
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
A6 A6    LDX $A6
A2 0A    LDX #10 ;hides 'ASL A'
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers A, and X; and writes in stack 
08       PHP
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
08       PHP
48       PHA
A9       LDA #38
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack
10 bytes 
EA       NOP
98       TYA
48       PHA
A0 0D    LDY #13
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
 Clobbers A, and Z&N; and writes in stack 
EA   ... NOP      × 3
08       PHP
A2 0D    LDX #13
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
00 00    BRK 0
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
00 00    BRK 0
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
10 FA    BPL *-4
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
48       PHA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
10 FA    BPL *-4
28       PLP
 Clobbers A, and S; and writes in stack
11 bytes 
48       PHA
98       TYA
48       PHA
A0 0C    LDY #12
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 2
08       PHP
38       SEC
A9 0D    LDA #13
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
68       PLA
28       PLP
 Requires @zptemp; and writes in stack 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack
12 bytes 
EA       NOP
08       PHP
48       PHA
38       SEC
A9 0C    LDA #12
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
20 bytes 
68       PLA
48       PHA
68   ... PLA      × 18
 Clobbers A, S, and Z&N
23 bytes 
EA       NOP
68       PLA       \ × 11
48       PHA       /
 Clobbers A, and Z&N
27 bytes 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
28 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
29 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
30 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
40 bytes 
18   ... CLC      × 38
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 38
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 38
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 38
 Requires support for unofficial opcodes
41 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 38
 Not relocatable code


80 cycles

5 bytes 
A9       LDA #53
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A2 88    LDX #136 ;hides 'DEY'
EA       NOP
CA       DEX
30 FB    BMI *-3
 Clobbers X, Y, and Z&N 
68       PLA
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08       PHP ;first loop only
30 FC    BMI *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack 
68       PLA
A2 0F    LDX #15
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
EA   ... NOP      × 2
A2 0F    LDX #15
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #46
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #46
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
EA       NOP
B0 FB    BCS *-3
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes
8 bytes 
38       SEC
A9 0B    LDA #11
EA       NOP
E9 01    SBC #1
D0 FA    BNE *-4
 Clobbers A, Z&N, C, and V 
EA       NOP
08       PHP
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack 
68       PLA
00 00    BRK 0
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
D0 FC    BNE *-2
 Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
9 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
EA       NOP
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9       LDA #39
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
48       PHA
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
D0 FB    BNE *-3
68       PLA
28       PLP
 Clobbers S; requires @zptemp; and writes in stack 
48       PHA
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
68       PLA
28       PLP
 Clobbers S; requires support for unofficial opcodes; and writes in stack
12 bytes 
08       PHP
28       PLP
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
68       PLA
28       PLP
 Writes in stack
20 bytes 
68   ... PLA      × 20
 Clobbers A, S, and Z&N
23 bytes 
68       PLA       \ × 3
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
27 bytes 
EA       NOP
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
40 bytes 
EA   ... NOP      × 40
 No requirements


81 cycles

5 bytes 
A2 10    LDX #16
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 10    LDY #16
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9       LDA #54
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
48       PHA
30 FB    BMI *-3
 Clobbers A, S, Z&N, C, and V; and writes in stack
7 bytes 
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
E6 xx    INC @zptemp
90 FA    BCC *-4
 Clobbers A, Z&N, C, and V; and requires @zptemp 
48       PHA
A9       LDA #47
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #47
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
 Clobbers A, Z&N, C, and V 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires @zptemp 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts15
90 FA    BCC *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes 
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
00 00    BRK 0
90 FA    BCC *-4
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
08       PHP
28       PLP
18       CLC
10 F9    BPL *-5
 Clobbers A, Z&N, and C; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
4C xx xx JMP *+3
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C; and not relocatable code 
08       PHP
A6 A6    LDX $A6
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #40
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
EA       NOP
68   ... PLA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C 
48       PHA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
28       PLP
 Clobbers A, and S; and writes in stack
10 bytes 
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
26 26    ROL $26
66 26    ROR $26
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C 
08       PHP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack
11 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
F6 F6    INC $F6,X
90 FB    BCC *-3
68       PLA
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack
12 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
90 FA    BCC *-4
68       PLA
28       PLP
 Writes in stack
21 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 18
 Clobbers A, S, and Z&N
23 bytes 
68       PLA       \ × 2
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
28 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
29 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
30 bytes 
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
41 bytes 
18   ... CLC      × 39
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 39
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 39
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 39
 Requires support for unofficial opcodes
42 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 39
 Not relocatable code


82 cycles

5 bytes 
A9       LDA #55
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
48       PHA
A0 88    LDY #136 ;hides 'DEY'
48       PHA
30 FC    BMI *-2
 Clobbers Y, S, and Z&N; and writes in stack 
A2 09    LDX #9
68       PLA
CA       DEX
D0 FC    BNE *-2
 Clobbers A, X, S, and Z&N 
A0 09    LDY #9
68       PLA
88       DEY
D0 FC    BNE *-2
 Clobbers A, Y, S, and Z&N
7 bytes 
A2 09    LDX #9
EA   ... NOP      × 2
CA       DEX
D0 FB    BNE *-3
 Clobbers X, and Z&N 
A0 09    LDY #9
EA   ... NOP      × 2
88       DEY
D0 FB    BNE *-3
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #48
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #48
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
EA       NOP
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
EA       NOP
B0 FB    BCS *-3
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
68       PLA
38       SEC
A9 0F    LDA #15
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, S, Z&N, C, and V
9 bytes 
EA   ... NOP      × 2
38       SEC
A9 0F    LDA #15
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
98       TYA
48       PHA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
 Clobbers A, and Z&N; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires @zptemp 
08       PHP
48       PHA
A9       LDA #41
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
EA       NOP
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
04 04    NOP $04
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes 
EA       NOP
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack 
68   ... PLA      × 2
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C
10 bytes 
EA   ... NOP      × 2
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
EA   ... NOP      × 2
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C 
EA   ... NOP      × 2
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 0D    LDA #13
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
21 bytes 
EA       NOP
68   ... PLA      × 20
 Clobbers A, S, and Z&N
24 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA       \ × 10
48       PHA       /
 Clobbers A, and Z&N
28 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N
41 bytes 
EA   ... NOP      × 41
 No requirements


83 cycles

5 bytes 
A9       LDA #56
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
 Clobbers A, Z&N, C, V, and D 
EA       NOP
A2 10    LDX #16
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 10    LDY #16
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
38       SEC
A9 10    LDA #16
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
08       PHP
A2 0F    LDX #15
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9       LDA #49
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #49
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
18       CLC
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C; and requires @zptemp 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
18       CLC
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C; and requires support for unofficial opcodes
9 bytes 
EA   ... NOP      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires @zptemp 
20 xx xx JSR @rts12
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; requires @rts12; and writes in stack 
08       PHP
48       PHA
A9       LDA #42
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
EA   ... NOP      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes 
18   ... CLC      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
00 00    BRK 0
90 FA    BCC *-4
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
68   ... PLA      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C 
48   ... PHA      × 2
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
48       PHA
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
10 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C 
E6 xx    INC @zptemp
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires @zptemp; and writes in stack 
08       PHP
E6 xx    INC @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires @zptemp; and writes in stack 
04 04    NOP $04
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
04 04    NOP $04
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack 
00 00    BRK 0
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
EA       NOP
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
EA       NOP
48       PHA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
28       PLP
 Clobbers A, and S; and writes in stack
11 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
10 FA    BPL *-4
68       PLA
28       PLP
 Writes in stack
21 bytes 
68       PLA
48       PHA
68   ... PLA      × 19
 Clobbers A, S, and Z&N
24 bytes 
EA       NOP
68       PLA       \ × 2
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
28 bytes 
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp
29 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X
76 36    ROR $36,X
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
30 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
31 bytes 
EA       NOP
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
42 bytes 
18   ... CLC      × 40
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 40
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 40
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 40
 Requires support for unofficial opcodes
43 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 40
 Not relocatable code


84 cycles

5 bytes 
A9       LDA #57
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
48       PHA
A2 10    LDX #16
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 10    LDY #16
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 10    LDX #16
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 10    LDY #16
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires @rts12; and writes in stack 
48       PHA
A9       LDA #50
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #50
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68   ... PLA      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08       PHP ;first loop only
30 FC    BMI *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack
8 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
E6 xx    INC @zptemp
28       PLP
10 F9    BPL *-5
 Clobbers A, Z&N, and C; requires @zptemp; and writes in stack 
00 00    BRK 0
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 4
10 F9    BPL *-5
 Clobbers A, S, Z&N, and C; and writes in stack 
68       PLA
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
EA       NOP
B0 FB    BCS *-3
 Clobbers A, S, Z&N, C, and V; and requires support for unofficial opcodes
9 bytes 
38       SEC
A9 09    LDA #9
EA   ... NOP      × 2
E9 01    SBC #1
D0 F9    BNE *-5
 Clobbers A, Z&N, C, and V 
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
24 24    BIT $24
28       PLP
18       CLC
10 F8    BPL *-6
 Clobbers A, Z&N, and C; and writes in stack 
E6 xx    INC @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires @zptemp 
08       PHP
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9       LDA #43
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
08       PHP
A2 0A    LDX #10 ;hides 'ASL A'
CA       DEX
D0 FC    BNE *-2
03 xx    SLO (@ptrtemp,X)
28       PLP
 Clobbers A, and X; requires @ptrtemp, and support for unofficial opcodes; and writes in stack 
08       PHP
A0 0A    LDY #10 ;hides 'ASL A'
88       DEY
D0 FC    BNE *-2
13 xx    SLO (@ptrtemp,Y)
28       PLP
 Clobbers A, and Y; requires @ptrtemp, and support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack 
68       PLA
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A, S, and Z&N; requires support for unofficial opcodes; and writes in stack
10 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 5
18       CLC
10 F7    BPL *-7
 Clobbers A, Z&N, and C 
EA       NOP
98       TYA
48       PHA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
 Clobbers A, and Z&N; and writes in stack 
EA   ... NOP      × 3
08       PHP
A2 0E    LDX #14
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 3
08       PHP
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
F6 F6    INC $F6,X
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts14
90 FA    BCC *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack 
08       PHP
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts14
90 FA    BCC *-4
28       PLP
 Clobbers A; requires @rts12, and @rts14; and writes in stack 
EA   ... NOP      × 2
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
EA   ... NOP      × 2
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack 
48   ... PHA      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, and C; and writes in stack 
48   ... PHA      × 2
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
28       PLP
 Clobbers A, and S; and writes in stack
11 bytes 
48       PHA
98       TYA
48       PHA
A0 0D    LDY #13
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
98       TYA
48       PHA
A0 0D    LDY #13
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
28       PLP
 Clobbers A; and writes in stack
12 bytes 
EA       NOP
08       PHP
48       PHA
38       SEC
A9 0D    LDA #13
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
21 bytes 
68   ... PLA      × 21
 Clobbers A, S, and Z&N
24 bytes 
68       PLA       \ × 12
48       PHA       /
 Clobbers A, and Z&N
28 bytes 
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N
42 bytes 
EA   ... NOP      × 42
 No requirements


85 cycles

5 bytes 
A9       LDA #58
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A2 0C    LDX #12
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
7 bytes 
EA       NOP
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
 Clobbers A, Z&N, C, V, and D 
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
08       PHP
28       PLP
B0 FA    BCS *-4
 Clobbers A, Z&N, C, and V; and writes in stack 
48       PHA
A9       LDA #51
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #51
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
38       SEC
A9 10    LDA #16
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
08       PHP
28       PLP
90 FA    BCC *-4
 Clobbers A, Z&N, and C; and writes in stack 
08       PHP
A2 0B    LDX #11
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0B    LDY #11
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 0F    LDA #15
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 0F    LDA #15
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
E6 xx    INC @zptemp
90 F9    BCC *-5
 Clobbers A, Z&N, and C; and requires @zptemp 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
FE 00 02 INC $0200,X
90 F9    BCC *-5
 Clobbers A, Z&N, and C; and requires writable $200-$2FF 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
FE 00 03 INC $0300,X
90 F9    BCC *-5
 Clobbers A, Z&N, and C; and requires writable $300-$3FF 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
FE 00 04 INC $0400,X
90 F9    BCC *-5
 Clobbers A, Z&N, and C; and requires writable $400-$4FF 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
FE 00 05 INC $0500,X
90 F9    BCC *-5
 Clobbers A, Z&N, and C; and requires writable $500-$5FF 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
FE 00 06 INC $0600,X
90 F9    BCC *-5
 Clobbers A, Z&N, and C; and requires writable $600-$6FF 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
FE 00 07 INC $0700,X
90 F9    BCC *-5
 Clobbers A, Z&N, and C; and requires writable $700-$7FF 
08       PHP
48       PHA
A9       LDA #44
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
EA       NOP
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
18       CLC
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C; and requires support for unofficial opcodes
10 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack 
68       PLA       \ × 2
48       PHA       /
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C
22 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 19
 Clobbers A, S, and Z&N
25 bytes 
68       PLA       \ × 2
48       PHA       /
36 36    ROL $36,X
76 36    ROR $36,X
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
29 bytes 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF
30 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
31 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
32 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
43 bytes 
18   ... CLC      × 41
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 41
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 41
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 41
 Requires support for unofficial opcodes
44 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 41
 Not relocatable code


86 cycles

5 bytes 
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 11    LDY #17
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9       LDA #59
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
7 bytes 
48       PHA
A9       LDA #52
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #52
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
 Clobbers A, S, Z&N, C, V, and D; and writes in stack
8 bytes 
A5 A5    LDA $A5
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
 Clobbers A, Z&N, C, V, and D 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
C5 C5    CMP $C5
30 FB    BMI *-3
28       PLP
 Clobbers Y; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires @rts12; and writes in stack 
00 00    BRK 0
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
48       PHA
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack 
48       PHA
08       PHP
A2 0F    LDX #15
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack
9 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
A5 A5    LDA $A5
38       SEC
A9 10    LDA #16
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A6 A6    LDX $A6
A2 0F    LDX #15
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; requires @zptemp; and writes in stack 
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires @zptemp 
08       PHP
48       PHA
A9       LDA #45
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; requires support for unofficial opcodes; and writes in stack 
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes
10 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
08       PHP
28       PLP
18       CLC
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; and writes in stack 
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
4C xx xx JMP *+3
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C; and not relocatable code 
68       PLA
48       PHA
68   ... PLA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C
11 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 5
18       CLC
10 F7    BPL *-7
 Clobbers A, Z&N, and C
12 bytes 
EA       NOP
48       PHA
98       TYA
48       PHA
A0 0D    LDY #13
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
00 00    BRK 0
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
10 FB    BPL *-3
68       PLA
28       PLP
 Requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
10 FA    BPL *-4
68       PLA
28       PLP
 Clobbers S; and writes in stack
13 bytes 
EA   ... NOP      × 2
08       PHP
48       PHA
38       SEC
A9 0D    LDA #13
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
22 bytes 
EA       NOP
68   ... PLA      × 21
 Clobbers A, S, and Z&N
25 bytes 
EA       NOP
68       PLA       \ × 12
48       PHA       /
 Clobbers A, and Z&N
29 bytes 
EA       NOP
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N
43 bytes 
EA   ... NOP      × 43
 No requirements


87 cycles

5 bytes 
A9       LDA #60
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack 
A2 F8    LDX #248 ;hides 'SED'
68       PLA
E8       INX
D0 FB    BNE *-3
 Clobbers A, X, S, Z&N, and D 
A0 F8    LDY #248 ;hides 'SED'
68       PLA
C8       INY
D0 FB    BNE *-3
 Clobbers A, Y, S, Z&N, and D
7 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C 
EA       NOP
A2 0C    LDX #12
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
EA       NOP
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #53
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #53
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
08       PHP
A2 88    LDX #136 ;hides 'DEY'
EA       NOP
CA       DEX
30 FB    BMI *-3
28       PLP
 Clobbers X, and Y; and writes in stack
9 bytes 
98       TYA
48       PHA
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
 Clobbers A, and Z&N; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 0F    LDX #15
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #46
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
EA       NOP
B0 FB    BCS *-3
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
08       PHP
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
EA       NOP
B0 FB    BCS *-3
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack
10 bytes 
48       PHA
38       SEC
A9 0B    LDA #11
EA       NOP
E9 01    SBC #1
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 0B    LDA #11
EA       NOP
E9 01    SBC #1
D0 FA    BNE *-4
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack
11 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
22 bytes 
68       PLA
48       PHA
68   ... PLA      × 20
 Clobbers A, S, and Z&N
25 bytes 
68       PLA       \ × 4
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
30 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
31 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
33 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
44 bytes 
18   ... CLC      × 42
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 42
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 42
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 42
 Requires support for unofficial opcodes
45 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 42
 Not relocatable code


88 cycles

5 bytes 
A9       LDA #61
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
 Clobbers A, Z&N, C, V, and D 
EA       NOP
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 11    LDY #17
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
38       SEC
A9 11    LDA #17
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
08       PHP
A2 10    LDX #16
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 10    LDY #16
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9       LDA #54
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #54
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
 Clobbers A, S, Z&N, and C; requires @rts12; and writes in stack
9 bytes 
48       PHA
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
E6 xx    INC @zptemp
90 FA    BCC *-4
68       PLA
 Clobbers Z&N, C, and V; requires @zptemp; and writes in stack 
08       PHP
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
E6 xx    INC @zptemp
90 FA    BCC *-4
28       PLP
 Clobbers A; requires @zptemp; and writes in stack 
EA   ... NOP      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires @rts12; and writes in stack 
08       PHP
48       PHA
A9       LDA #47
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack 
48   ... PHA      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
10 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
28       PLP
 Clobbers A; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; requires @zptemp; and writes in stack 
EA       NOP
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires @zptemp 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts15
90 FA    BCC *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; requires support for unofficial opcodes; and writes in stack 
EA       NOP
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires support for unofficial opcodes 
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
00 00    BRK 0
90 FA    BCC *-4
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
11 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
08       PHP
28       PLP
18       CLC
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; and writes in stack 
EA       NOP
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
4C xx xx JMP *+3
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C; and not relocatable code 
A5 A5    LDA $A5
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
FE 00 02 INC $0200,X
90 F9    BCC *-5
 Clobbers A, Z&N, and C; and requires writable $200-$2FF 
A5 A5    LDA $A5
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
FE 00 03 INC $0300,X
90 F9    BCC *-5
 Clobbers A, Z&N, and C; and requires writable $300-$3FF 
A5 A5    LDA $A5
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
FE 00 04 INC $0400,X
90 F9    BCC *-5
 Clobbers A, Z&N, and C; and requires writable $400-$4FF 
A5 A5    LDA $A5
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
FE 00 05 INC $0500,X
90 F9    BCC *-5
 Clobbers A, Z&N, and C; and requires writable $500-$5FF 
A5 A5    LDA $A5
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
FE 00 06 INC $0600,X
90 F9    BCC *-5
 Clobbers A, Z&N, and C; and requires writable $600-$6FF 
A5 A5    LDA $A5
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
FE 00 07 INC $0700,X
90 F9    BCC *-5
 Clobbers A, Z&N, and C; and requires writable $700-$7FF 
48       PHA
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
28       PLP
 Clobbers S; and writes in stack 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C
12 bytes 
08       PHP
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack 
68       PLA
48       PHA
26 26    ROL $26
66 26    ROR $26
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
 Clobbers A, Z&N, and C
22 bytes 
68   ... PLA      × 22
 Clobbers A, S, and Z&N
25 bytes 
68       PLA       \ × 3
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
30 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
44 bytes 
EA   ... NOP      × 44
 No requirements


89 cycles

5 bytes 
A9       LDA #62
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks 
A0 88    LDY #136 ;hides 'DEY'
68       PLA
30 FC    BMI *-2
 Clobbers A, Y, S, and Z&N
6 bytes 
A0 88    LDY #136 ;hides 'DEY'
EA   ... NOP      × 2
30 FB    BMI *-3
 Clobbers Y, and Z&N 
A2 0A    LDX #10 ;hides 'ASL A'
EA       NOP
CA       DEX
D0 FB    BNE *-3
 Clobbers A, X, Z&N, and C 
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
A2 0B    LDX #11
48       PHA
CA       DEX
D0 FC    BNE *-2
 Clobbers X, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
F6 F6    INC $F6,X
90 FA    BCC *-4
 Clobbers A, Z&N, C, and V; and requires @zptemp, and writable $00-$FF 
48       PHA
A9       LDA #55
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #55
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C
9 bytes 
08       PHP
A2 09    LDX #9
EA   ... NOP      × 2
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 09    LDY #9
EA   ... NOP      × 2
88       DEY
D0 FB    BNE *-3
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #48
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
98       TYA
48       PHA
A0 0B    LDY #11
EA       NOP
88       DEY
D0 FC    BNE *-2
68       PLA
A8       TAY
 Clobbers A, and Z&N; and writes in stack 
EA       NOP
48       PHA
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
EA       NOP
B0 FB    BCS *-3
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
EA       NOP
08       PHP
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
EA       NOP
B0 FB    BCS *-3
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack 
48       PHA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
28       PLP
 Clobbers A, and S; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers S, Z&N, and C; requires @zptemp; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers S, Z&N, and C; requires support for unofficial opcodes; and writes in stack
11 bytes 
48       PHA
98       TYA
48       PHA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 2
08       PHP
38       SEC
A9 0F    LDA #15
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack
12 bytes 
EA   ... NOP      × 2
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
23 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 20
 Clobbers A, S, and Z&N
26 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA       \ × 11
48       PHA       /
 Clobbers A, and Z&N
30 bytes 
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp
31 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N, and V 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
32 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
34 bytes 
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
45 bytes 
18   ... CLC      × 43
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 43
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 43
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 43
 Requires support for unofficial opcodes
46 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 43
 Not relocatable code


90 cycles

5 bytes 
A9       LDA #63
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
68       PLA
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 11    LDY #17
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
EA       NOP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
 Clobbers A, Z&N, C, V, and D 
EA   ... NOP      × 2
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 11    LDY #17
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #56
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #56
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
48       PHA
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, V, and D; and writes in stack 
EA       NOP
38       SEC
A9 11    LDA #17
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
08       PHP
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 10    LDX #16
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 10    LDY #16
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 10    LDA #16
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C 
08       PHP
48       PHA
A9       LDA #49
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
EA   ... NOP      × 2
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; requires @zptemp; and writes in stack 
20 xx xx JSR @rts12
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires @rts12; and writes in stack 
EA   ... NOP      × 2
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; requires support for unofficial opcodes; and writes in stack 
48       PHA
18   ... CLC      × 2
A9 2A    LDA #$2A ;hides 'ROL A'
EA       NOP
00 00    BRK 0
90 FA    BCC *-4
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
28       PLP
 Clobbers S; requires support for unofficial opcodes; and writes in stack
12 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
E6 xx    INC @zptemp
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
28       PLP
 Requires @zptemp; and writes in stack 
04 04    NOP $04
08       PHP
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack 
EA       NOP
48       PHA
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
28       PLP
 Clobbers S; and writes in stack
13 bytes 
EA       NOP
08       PHP
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
23 bytes 
EA       NOP
68   ... PLA      × 22
 Clobbers A, S, and Z&N
26 bytes 
EA       NOP
68       PLA       \ × 3
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
30 bytes 
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
45 bytes 
EA   ... NOP      × 45
 No requirements


91 cycles

5 bytes 
A2 12    LDX #18
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9       LDA #64
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
7 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
EA   ... NOP      × 2
30 FA    BMI *-4
 Clobbers A, Z&N, C, and V 
48       PHA
A9       LDA #57
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #57
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C 
48       PHA
08       PHP
A2 10    LDX #16
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 10    LDY #16
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
26 26    ROL $26
66 26    ROR $26
90 F9    BCC *-5
 Clobbers A, Z&N, and C 
08       PHP
A6 A6    LDX $A6
A2 10    LDX #16
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 10    LDY #16
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
28       PLP
 Clobbers A; requires @rts12; and writes in stack 
08       PHP
48       PHA
A9       LDA #50
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
E6 xx    INC @zptemp
28       PLP
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; requires @zptemp; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
E6 xx    INC @zptemp
28       PLP
10 F9    BPL *-5
28       PLP
 Clobbers A; requires @zptemp; and writes in stack 
00 00    BRK 0
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
00 00    BRK 0
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack 
68       PLA
98       TYA
48       PHA
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack 
48   ... PHA      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
68       PLA
 Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
48       PHA
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
28       PLP
 Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
11 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
24 24    BIT $24
28       PLP
18       CLC
10 F8    BPL *-6
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
38       SEC
A9 09    LDA #9
EA   ... NOP      × 2
E9 01    SBC #1
D0 F9    BNE *-5
28       PLP
 Clobbers A; and writes in stack
12 bytes 
EA       NOP
48       PHA
98       TYA
48       PHA
A0 0E    LDY #14
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
F6 F6    INC $F6,X
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
18       CLC
A9 2A    LDA #$2A ;hides 'ROL A'
20 xx xx JSR @rts14
90 FA    BCC *-4
68       PLA
28       PLP
 Requires @rts12, and @rts14; and writes in stack 
EA   ... NOP      × 2
08       PHP
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
28       PLP
 Clobbers S; and writes in stack
13 bytes 
08       PHP
48       PHA
98       TYA
48       PHA
A0 0D    LDY #13
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
68       PLA
28       PLP
 Writes in stack
23 bytes 
68       PLA
48       PHA
68   ... PLA      × 21
 Clobbers A, S, and Z&N
26 bytes 
68       PLA       \ × 13
48       PHA       /
 Clobbers A, and Z&N
31 bytes 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
32 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
33 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
34 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
46 bytes 
18   ... CLC      × 44
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 44
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 44
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 44
 Requires support for unofficial opcodes
47 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 44
 Not relocatable code


92 cycles

5 bytes 
A9       LDA #65
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A2 0D    LDX #13
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 0D    LDY #13
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9       LDA #58
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #58
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68       PLA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
 Clobbers A, S, Z&N, C, V, and D 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
 Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
8 bytes 
EA   ... NOP      × 2
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
 Clobbers A, Z&N, C, V, and D 
08       PHP
A2 0C    LDX #12
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA       NOP
F6 F6    INC $F6,X
B0 F9    BCS *-5
 Clobbers A, Z&N, C, and V; and requires @zptemp, and writable $00-$FF 
A9 2A    LDA #$2A ;hides 'ROL A'
00 00... BRK 0    × 2
10 F9    BPL *-5
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
68       PLA
38       SEC
A9 11    LDA #17
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, S, Z&N, C, and V 
EA       NOP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
9 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
08       PHP
28       PLP
B0 FA    BCS *-4
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
EA   ... NOP      × 2
38       SEC
A9 11    LDA #17
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
EA       NOP
08       PHP
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
E6 xx    INC @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires @zptemp 
08       PHP
48       PHA
A9       LDA #51
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
08       PHP
28       PLP
90 FA    BCC *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack 
EA       NOP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C
11 bytes 
08       PHP
48       PHA
38       SEC
A9 0F    LDA #15
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
23 bytes 
68   ... PLA      × 23
 Clobbers A, S, and Z&N
27 bytes 
68       PLA       \ × 3
48       PHA       /
36 36    ROL $36,X
76 36    ROR $36,X
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
31 bytes 
EA       NOP
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
46 bytes 
EA   ... NOP      × 46
 No requirements


93 cycles

5 bytes 
A9       LDA #66
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
EA       NOP
A2 12    LDX #18
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
38       SEC
A9 12    LDA #18
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
08       PHP
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 11    LDY #17
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9       LDA #59
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #59
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
 Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
8 bytes 
EA   ... NOP      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
9 bytes 
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
08       PHP
48       PHA
A9       LDA #52
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
68       PLA
 Clobbers S, Z&N, C, V, and D; and writes in stack 
EA       NOP
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C 
48       PHA
08       PHP
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
28       PLP
 Clobbers A, and S; and writes in stack
10 bytes 
24 24    BIT $24
48       PHA
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, V, and D; and writes in stack 
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
26 26    ROL $26
66 26    ROR $26
90 F9    BCC *-5
 Clobbers A, Z&N, and C 
08       PHP
A5 A5    LDA $A5
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12; and writes in stack 
00 00    BRK 0
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
38       SEC
A9 10    LDA #16
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack
11 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
68       PLA
28       PLP
 Writes in stack
24 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 21
 Clobbers A, S, and Z&N
27 bytes 
EA       NOP
68       PLA       \ × 13
48       PHA       /
 Clobbers A, and Z&N
32 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
33 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
34 bytes 
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
47 bytes 
18   ... CLC      × 45
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 45
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 45
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 45
 Requires support for unofficial opcodes
48 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 45
 Not relocatable code


94 cycles

5 bytes 
A9       LDA #67
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
48       PHA
A2 12    LDX #18
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 12    LDX #18
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack 
48       PHA
A9       LDA #60
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #60
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
38       SEC
A9 0D    LDA #13
EA       NOP
E9 01    SBC #1
D0 FA    BNE *-4
 Clobbers A, Z&N, C, and V 
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP       \ × 2
28       PLP       /
10 F9    BPL *-5
 Clobbers A, Z&N, and C; and writes in stack
9 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack 
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 0C    LDX #12
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 0C    LDY #12
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #53
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
48       PHA
98       TYA
48       PHA
A0 0F    LDY #15
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
48       PHA
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
EA       NOP
B0 FB    BCS *-3
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack
12 bytes 
08       PHP
48       PHA
38       SEC
A9 0B    LDA #11
EA       NOP
E9 01    SBC #1
D0 FA    BNE *-4
68       PLA
28       PLP
 Writes in stack
24 bytes 
EA       NOP
68   ... PLA      × 23
 Clobbers A, S, and Z&N
27 bytes 
68       PLA       \ × 5
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
32 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N
47 bytes 
EA   ... NOP      × 47
 No requirements


95 cycles

5 bytes 
A9       LDA #68
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and writes in stack 
68       PLA
A2 12    LDX #18
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
EA   ... NOP      × 2
A2 12    LDX #18
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #61
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #61
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, V, and D; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
90 00    BCC *+2
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C 
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 11    LDY #17
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 11    LDA #17
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
48       PHA
A9       LDA #54
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
08       PHP
48       PHA
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
E6 xx    INC @zptemp
90 FA    BCC *-4
68       PLA
28       PLP
 Requires @zptemp; and writes in stack 
EA   ... NOP      × 2
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12; and writes in stack 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack 
48   ... PHA      × 2
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
08       PHP
28       PLP
90 FA    BCC *-4
68       PLA
 Clobbers S, Z&N, and C; and writes in stack
12 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
68       PLA
28       PLP
 Writes in stack
24 bytes 
68       PLA
48       PHA
68   ... PLA      × 22
 Clobbers A, S, and Z&N
27 bytes 
68       PLA       \ × 4
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
32 bytes 
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp
33 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 2
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
34 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
35 bytes 
EA       NOP
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
48 bytes 
18   ... CLC      × 46
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 46
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 46
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 46
 Requires support for unofficial opcodes
49 bytes 
4C xx xx JMP *+3
EA   ... NOP      × 46
 Not relocatable code


96 cycles

5 bytes 
A2 13    LDX #19
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9       LDA #69
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
7 bytes 
48       PHA
A9       LDA #62
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #62
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
EA   ... NOP      × 2
30 FB    BMI *-3
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
A2 0A    LDX #10 ;hides 'ASL A'
EA       NOP
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers A, and X; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack 
68   ... PLA      × 2
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
 Clobbers A, S, Z&N, C, V, and D 
48       PHA
38       SEC
A9 12    LDA #18
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, S, Z&N, C, and V; and writes in stack 
48       PHA
08       PHP
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack
9 bytes 
A5 A5    LDA $A5
38       SEC
A9 12    LDA #18
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP       \ × 2
28       PLP       /
10 F9    BPL *-5
 Clobbers A, Z&N, and C; and writes in stack 
08       PHP
A2 0B    LDX #11
C5 C5    CMP $C5
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers X; and writes in stack 
48       PHA
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
F6 F6    INC $F6,X
90 FA    BCC *-4
68       PLA
 Clobbers Z&N, C, and V; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
F6 F6    INC $F6,X
90 FA    BCC *-4
28       PLP
 Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9       LDA #55
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack 
EA       NOP
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
28       PLP
 Clobbers A; and writes in stack
12 bytes 
48       PHA
98       TYA
48       PHA
A0 0B    LDY #11
EA       NOP
88       DEY
D0 FC    BNE *-2
68       PLA
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
EA       NOP
08       PHP
48       PHA
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
EA       NOP
B0 FB    BCS *-3
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack 
48       PHA
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
B8       CLV
50 00    BVC *+2
D0 FA    BNE *-4
68       PLA
28       PLP
 Clobbers S; and writes in stack
13 bytes 
EA   ... NOP      × 2
08       PHP
48       PHA
38       SEC
A9 0F    LDA #15
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
24 bytes 
68   ... PLA      × 24
 Clobbers A, S, and Z&N
28 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA       \ × 12
48       PHA       /
 Clobbers A, and Z&N
32 bytes 
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N
48 bytes 
EA   ... NOP      × 48
 No requirements


97 cycles

5 bytes 
A9       LDA #70
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A2 0C    LDX #12
48       PHA
CA       DEX
D0 FC    BNE *-2
 Clobbers X, S, and Z&N; and writes in stack 
A0 0C    LDY #12
48       PHA
88       DEY
D0 FC    BNE *-2
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and writes in stack 
A2 0C    LDX #12
C5 C5    CMP $C5
CA       DEX
D0 FB    BNE *-3
 Clobbers X, Z&N, and C 
A0 0C    LDY #12
C5 C5    CMP $C5
88       DEY
D0 FB    BNE *-3
 Clobbers Y, Z&N, and C 
A2 0C    LDX #12
24 24    BIT $24
CA       DEX
D0 FB    BNE *-3
 Clobbers X, Z&N, and V 
A0 0C    LDY #12
24 24    BIT $24
88       DEY
D0 FB    BNE *-3
 Clobbers Y, Z&N, and V 
A2 08    LDX #8
08       PHP
28       PLP
CA       DEX
D0 FB    BNE *-3
 Clobbers X, and Z&N; and writes in stack 
A0 08    LDY #8
08       PHP
28       PLP
88       DEY
D0 FB    BNE *-3
 Clobbers Y, and Z&N; and writes in stack 
A2 0C    LDX #12
A5 A5    LDA $A5
CA       DEX
D0 FB    BNE *-3
 Clobbers A, X, and Z&N 
A0 0C    LDY #12
A5 A5    LDA $A5
88       DEY
D0 FB    BNE *-3
 Clobbers A, Y, and Z&N 
A2 0C    LDX #12
A4 A4    LDY $A4
CA       DEX
D0 FB    BNE *-3
 Clobbers X, Y, and Z&N 
A2 0C    LDX #12
85 xx    STA @zptemp
CA       DEX
D0 FB    BNE *-3
 Clobbers X, and Z&N; and requires @zptemp 
A0 0C    LDY #12
85 xx    STA @zptemp
88       DEY
D0 FB    BNE *-3
 Clobbers Y, and Z&N; and requires @zptemp 
48       PHA
A9       LDA #63
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #63
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A2 0C    LDX #12
04 04    NOP $04
CA       DEX
D0 FB    BNE *-3
 Clobbers X, and Z&N; and requires support for unofficial opcodes 
A0 0C    LDY #12
04 04    NOP $04
88       DEY
D0 FB    BNE *-3
 Clobbers Y, and Z&N; and requires support for unofficial opcodes
8 bytes 
EA   ... NOP      × 3
A2 12    LDX #18
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
EA       NOP
E6 xx    INC @zptemp
90 F9    BCC *-5
 Clobbers A, Z&N, C, and V; and requires @zptemp 
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
FE 00 02 INC $0200,X
90 F9    BCC *-5
 Clobbers A, Z&N, C, and V; and requires writable $200-$2FF 
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
FE 00 03 INC $0300,X
90 F9    BCC *-5
 Clobbers A, Z&N, C, and V; and requires writable $300-$3FF 
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
FE 00 04 INC $0400,X
90 F9    BCC *-5
 Clobbers A, Z&N, C, and V; and requires writable $400-$4FF 
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
FE 00 05 INC $0500,X
90 F9    BCC *-5
 Clobbers A, Z&N, C, and V; and requires writable $500-$5FF 
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
FE 00 06 INC $0600,X
90 F9    BCC *-5
 Clobbers A, Z&N, C, and V; and requires writable $600-$6FF 
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
FE 00 07 INC $0700,X
90 F9    BCC *-5
 Clobbers A, Z&N, C, and V; and requires writable $700-$7FF 
68       PLA
38       SEC
A9 12    LDA #18
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, S, Z&N, C, and V
9 bytes 
EA       NOP
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, V, and D; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
90 00    BCC *+2
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C 
EA       NOP
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 11    LDX #17
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 11    LDY #17
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #56
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
25 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 22
 Clobbers A, S, and Z&N
28 bytes 
EA       NOP
68       PLA       \ × 4
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
33 bytes 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF
34 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
35 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
36 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
49 bytes 
18   ... CLC      × 47
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 47
50 00    BVC *+2
 Clobbers V 
85 xx    STA @zptemp
EA   ... NOP      × 47
 Requires @zptemp 
04 04    NOP $04
EA   ... NOP      × 47
 Requires support for unofficial opcodes


98 cycles

5 bytes 
A9       LDA #71
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
EA       NOP
A2 13    LDX #19
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
38       SEC
A9 13    LDA #19
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
08       PHP
A2 12    LDX #18
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9       LDA #64
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #64
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and writes in stack
9 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
EA   ... NOP      × 2
30 FA    BMI *-4
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
EA   ... NOP      × 2
30 FA    BMI *-4
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9       LDA #57
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
10 bytes 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
90 00    BCC *+2
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C
11 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
26 26    ROL $26
66 26    ROR $26
90 F9    BCC *-5
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts12
10 FA    BPL *-4
68       PLA
28       PLP
 Requires @rts12; and writes in stack
12 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
E6 xx    INC @zptemp
28       PLP
10 F9    BPL *-5
68       PLA
28       PLP
 Requires @zptemp; and writes in stack 
00 00    BRK 0
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
18       CLC
D0 FB    BNE *-3
68       PLA
28       PLP
 Requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
04 04    NOP $04
30 FA    BMI *-4
68       PLA
28       PLP
 Clobbers S; requires support for unofficial opcodes; and writes in stack
13 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
24 24    BIT $24
28       PLP
18       CLC
10 F8    BPL *-6
68       PLA
28       PLP
 Writes in stack
25 bytes 
EA       NOP
68   ... PLA      × 24
 Clobbers A, S, and Z&N
28 bytes 
68       PLA       \ × 14
48       PHA       /
 Clobbers A, and Z&N
33 bytes 
EA       NOP
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N
49 bytes 
EA   ... NOP      × 49
 No requirements


99 cycles

5 bytes 
A9       LDA #72
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A2 0E    LDX #14
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 0E    LDY #14
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
7 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack 
48       PHA
A9       LDA #65
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #65
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
18       CLC
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
EA   ... NOP      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and writes in stack 
08       PHP
A2 0D    LDX #13
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0D    LDY #13
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
38       SEC
A9 0C    LDA #12
24 24    BIT $24
E9 01    SBC #1
D0 F9    BNE *-5
 Clobbers A, Z&N, C, and V 
08       PHP
48       PHA
A9       LDA #58
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
90 00    BCC *+2
18       CLC
D0 F9    BNE *-5
 Clobbers A, S, Z&N, and C 
68       PLA
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
28       PLP
 Clobbers A, S, and Z&N; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
68       PLA
 Clobbers S, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
28       PLP
 Clobbers A, and S; requires dummy interrupt handler; and writes in stack
10 bytes 
EA   ... NOP      × 2
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
68       PLA
 Clobbers Z&N, C, V, and D; and writes in stack 
EA   ... NOP      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
90 00    BCC *+2
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C 
EA   ... NOP      × 2
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
28       PLP
 Clobbers A; and writes in stack 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
EA       NOP
F6 F6    INC $F6,X
B0 F9    BCS *-5
68       PLA
 Clobbers Z&N, C, and V; requires @zptemp, and writable $00-$FF; and writes in stack 
48       PHA
A9 2A    LDA #$2A ;hides 'ROL A'
00 00... BRK 0    × 2
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
11 bytes 
EA       NOP
08       PHP
48       PHA
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
25 bytes 
68       PLA
48       PHA
68   ... PLA      × 23
 Clobbers A, S, and Z&N
29 bytes 
68       PLA       \ × 4
48       PHA       /
36 36    ROL $36,X
76 36    ROR $36,X
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
34 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
35 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
37 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
50 bytes 
18   ... CLC      × 48
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 48
50 00    BVC *+2
 Clobbers V


100 cycles

5 bytes 
A9       LDA #73
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A2 0B    LDX #11
68       PLA
CA       DEX
D0 FC    BNE *-2
 Clobbers A, X, S, and Z&N 
A0 0B    LDY #11
68       PLA
88       DEY
D0 FC    BNE *-2
 Clobbers A, Y, S, and Z&N
7 bytes 
EA   ... NOP      × 2
A2 13    LDX #19
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #66
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #66
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
38       SEC
A9 13    LDA #19
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
EA       NOP
08       PHP
A2 12    LDX #18
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
E6 xx    INC @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; requires @zptemp; and writes in stack 
EA       NOP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 12    LDA #18
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 12    LDA #18
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9       LDA #59
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
E6 xx    INC @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
90 00    BCC *+2
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C; and requires @zptemp 
EA   ... NOP      × 2
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
11 bytes 
EA       NOP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
90 00    BCC *+2
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C 
F6 F6    INC $F6,X
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
48       PHA
08       PHP
48       PHA
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
68       PLA
28       PLP
 Clobbers S; and writes in stack
12 bytes 
08       PHP
24 24    BIT $24
48       PHA
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
25 bytes 
68   ... PLA      × 25
 Clobbers A, S, and Z&N
29 bytes 
EA       NOP
68       PLA       \ × 14
48       PHA       /
 Clobbers A, and Z&N
34 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
50 bytes 
EA   ... NOP      × 50
 No requirements


101 cycles

5 bytes 
A2 14    LDX #20
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 14    LDY #20
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9       LDA #74
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
7 bytes 
48       PHA
A9       LDA #67
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #67
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
EA       NOP
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
EA       NOP
48       PHA
30 FA    BMI *-4
 Clobbers A, S, Z&N, C, and V; and writes in stack
8 bytes 
38       SEC
A9 0E    LDA #14
EA       NOP
E9 01    SBC #1
D0 FA    BNE *-4
 Clobbers A, Z&N, C, and V 
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
18       CLC
10 FA    BPL *-4
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, S, Z&N, and C; and writes in stack 
48       PHA
08       PHP
A2 12    LDX #18
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
EA   ... NOP      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; and writes in stack 
08       PHP
A6 A6    LDX $A6
A2 12    LDX #18
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
28       PLP
 Clobbers A; requires @rts12, and @rts14; and writes in stack 
08       PHP
48       PHA
A9       LDA #60
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP       \ × 2
28       PLP       /
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
38       SEC
A9 0D    LDA #13
EA       NOP
E9 01    SBC #1
D0 FA    BNE *-4
28       PLP
 Clobbers A; and writes in stack 
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
90 00    BCC *+2
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
EA       NOP
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
90 00    BCC *+2
18       CLC
D0 F9    BNE *-5
 Clobbers A, S, Z&N, and C
11 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
68       PLA
28       PLP
 Writes in stack 
EA   ... NOP      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
90 00    BCC *+2
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C
26 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 23
 Clobbers A, S, and Z&N
29 bytes 
68       PLA       \ × 6
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
34 bytes 
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp
35 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N, and V 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 7
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
36 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
38 bytes 
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
51 bytes 
18   ... CLC      × 49
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 49
50 00    BVC *+2
 Clobbers V


102 cycles

5 bytes 
A9       LDA #75
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
7 bytes 
A2 13    LDX #19
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9       LDA #68
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #68
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
A2 13    LDX #19
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48   ... PHA      × 2
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack 
EA       NOP
A2 0B    LDX #11
68       PLA
CA       DEX
D0 FC    BNE *-2
 Clobbers A, X, S, and Z&N 
EA       NOP
A0 0B    LDY #11
68       PLA
88       DEY
D0 FC    BNE *-2
 Clobbers A, Y, S, and Z&N
8 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
A6 A6    LDX $A6
A2 0E    LDX #14
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 0E    LDY #14
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N 
38       SEC
A9 EB    LDA #$EB ;hides 'SBC #$1A'
1A       NOP ;first loop only
EA   ... NOP      × 2
B0 FA    BCS *-4
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
68       PLA
38       SEC
A9 13    LDA #19
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, S, Z&N, C, and V
9 bytes 
EA   ... NOP      × 2
38       SEC
A9 13    LDA #19
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
EA   ... NOP      × 2
08       PHP
A2 12    LDX #18
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 12    LDY #18
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #61
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack 
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
90 00    BCC *+2
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C
26 bytes 
EA       NOP
68   ... PLA      × 25
 Clobbers A, S, and Z&N
29 bytes 
68       PLA       \ × 5
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
34 bytes 
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
51 bytes 
EA   ... NOP      × 51
 No requirements


103 cycles

5 bytes 
A9       LDA #76
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
EA       NOP
A2 14    LDX #20
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 14    LDY #20
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$08'
08       PHP ;first loop only
90 FC    BCC *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack
7 bytes 
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
08       PHP
A2 13    LDX #19
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9       LDA #69
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #69
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C
9 bytes 
08       PHP
48       PHA
A9       LDA #62
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
8C       TXA
48       PHA
A2 0D    LDX #13
EA       NOP
CA       DEX
D0 FC    BNE *-2
68       PLA
AA       TAX
 Clobbers A, and Z&N; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
28       PLP
 Clobbers A; requires @rts12, and @rts14; and writes in stack 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
68       PLA
28       PLP
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
38       SEC
A9 12    LDA #18
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack 
48       PHA
08       PHP
38       SEC
A9 12    LDA #18
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A, and S; and writes in stack
11 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP       \ × 2
28       PLP       /
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
A5 A5    LDA $A5
38       SEC
A9 12    LDA #18
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 69    LDA #$69 ;hides 'ADC #$18'
18       CLC ;first loop only
F6 F6    INC $F6,X
90 FA    BCC *-4
68       PLA
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack
12 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 2
18       CLC
D0 FA    BNE *-4
68       PLA
28       PLP
 Writes in stack
26 bytes 
68       PLA
48       PHA
68   ... PLA      × 24
 Clobbers A, S, and Z&N
30 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA       \ × 13
48       PHA       /
 Clobbers A, and Z&N
35 bytes 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
36 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
37 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
38 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
52 bytes 
18   ... CLC      × 50
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 50
50 00    BVC *+2
 Clobbers V


104 cycles

5 bytes 
A9       LDA #77
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
48       PHA
A2 14    LDX #20
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 14    LDY #20
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A6 A6    LDX $A6
A2 14    LDX #20
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 14    LDY #20
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #70
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #70
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
00 00    BRK 0
10 FA    BPL *-4
 Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
8 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
18       CLC
10 F9    BPL *-5
 Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
00 00    BRK 0
10 F9    BPL *-5
 Clobbers A, Z&N, and C; requires @zptemp, and dummy interrupt handler; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
00 00    BRK 0
10 F9    BPL *-5
 Clobbers A, Z&N, and C; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
EA       NOP
48       PHA
30 FA    BMI *-4
 Clobbers A, S, Z&N, C, and V; and writes in stack
9 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 0C    LDX #12
C5 C5    CMP $C5
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0C    LDY #12
C5 C5    CMP $C5
88       DEY
D0 FB    BNE *-3
28       PLP
 Clobbers Y; and writes in stack 
F6 F6    INC $F6,X
38       SEC
A9 13    LDA #19
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V; and requires @zptemp, and writable $00-$FF 
08       PHP
48       PHA
A9       LDA #63
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
04 04    NOP $04
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
EA       NOP
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
EA       NOP
68       PLA
38       SEC
A9 13    LDA #19
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, S, Z&N, C, and V
10 bytes 
A5 A5    LDA $A5
38       SEC
A9 0E    LDA #14
EA       NOP
E9 01    SBC #1
D0 FA    BNE *-4
 Clobbers A, Z&N, C, and V
11 bytes 
EA       NOP
08       PHP
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack 
EA       NOP
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18       CLC
90 00    BCC *+2
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C
26 bytes 
68   ... PLA      × 26
 Clobbers A, S, and Z&N
30 bytes 
EA       NOP
68       PLA       \ × 5
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
35 bytes 
EA       NOP
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
52 bytes 
EA   ... NOP      × 52
 No requirements


105 cycles

5 bytes 
A9       LDA #78
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A2 0D    LDX #13
48       PHA
CA       DEX
D0 FC    BNE *-2
 Clobbers X, S, and Z&N; and writes in stack 
A0 0D    LDY #13
48       PHA
88       DEY
D0 FC    BNE *-2
 Clobbers Y, S, and Z&N; and writes in stack 
68       PLA
A2 14    LDX #20
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 14    LDY #20
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
EA   ... NOP      × 2
A2 14    LDX #20
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 14    LDY #20
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #71
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #71
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
EA       NOP
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$08'
08       PHP ;first loop only
90 FC    BCC *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack
8 bytes 
EA       NOP
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
EA       NOP
08       PHP
A2 13    LDX #19
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 13    LDA #19
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C 
08       PHP
38       SEC
A9 13    LDA #19
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9       LDA #64
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, and C; and writes in stack
10 bytes 
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack
11 bytes 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
EA   ... NOP      × 2
30 FA    BMI *-4
68       PLA
28       PLP
 Writes in stack
27 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 24
 Clobbers A, S, and Z&N
30 bytes 
68       PLA       \ × 15
48       PHA       /
 Clobbers A, and Z&N
36 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
37 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
38 bytes 
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
53 bytes 
18   ... CLC      × 51
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 51
50 00    BVC *+2
 Clobbers V


106 cycles

5 bytes 
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9       LDA #79
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08       PHP ;first loop only
EA       NOP
30 FB    BMI *-3
 Clobbers A, S, Z&N, C, and V; and writes in stack
7 bytes 
48       PHA
A9       LDA #72
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #72
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
08       PHP
A2 0E    LDX #14
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0E    LDY #14
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C; and writes in stack
9 bytes 
A5 A5    LDA $A5
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4
28       PLP
 Clobbers A; requires @rts12, and @rts15; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
18       CLC
10 F9    BPL *-5
 Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack 
08       PHP
48       PHA
A9       LDA #65
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
18       CLC
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
18       CLC
10 FA    BPL *-4
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack 
68       PLA
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
28       PLP
 Clobbers A, S, and Z&N; and writes in stack
10 bytes 
EA   ... NOP      × 2
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C 
EA   ... NOP      × 2
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack
11 bytes 
48       PHA
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
68       PLA
28       PLP
 Clobbers S; requires dummy interrupt handler; and writes in stack
12 bytes 
EA   ... NOP      × 2
08       PHP
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
10 FC    BPL *-2
68       PLA
28       PLP
 Writes in stack
27 bytes 
EA       NOP
68   ... PLA      × 26
 Clobbers A, S, and Z&N
31 bytes 
68       PLA       \ × 5
48       PHA       /
36 36    ROL $36,X
76 36    ROR $36,X
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
36 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N
53 bytes 
EA   ... NOP      × 53
 No requirements


107 cycles

5 bytes 
A9       LDA #80
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A2 18    LDX #24 ;hides 'CLC'
CA   ... DEX      × 2
D0 FB    BNE *-3
 Clobbers X, and Z&N 
A0 18    LDY #24 ;hides 'CLC'
88   ... DEY      × 2
D0 FB    BNE *-3
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9       LDA #73
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #73
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68       PLA
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$08'
08       PHP ;first loop only
90 FC    BCC *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack
8 bytes 
68       PLA
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, S, Z&N, C, and V 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C; and writes in stack
9 bytes 
38       SEC
A9 0D    LDA #13
24 24    BIT $24
E9 01    SBC #1
D0 F9    BNE *-5
 Clobbers A, Z&N, C, and V 
98       TYA
48       PHA
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
 Clobbers A, and Z&N; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 13    LDX #19
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #66
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
18       CLC
D0 F9    BNE *-5
 Clobbers A, S, Z&N, and C
10 bytes 
EA       NOP
48       PHA
38       SEC
A9 13    LDA #19
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
EA   ... NOP      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C 
EA       NOP
08       PHP
38       SEC
A9 13    LDA #19
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
E6 xx    INC @zptemp
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires @zptemp; and writes in stack 
EA       NOP
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, and C; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 12    LDA #18
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
27 bytes 
68       PLA
48       PHA
68   ... PLA      × 25
 Clobbers A, S, and Z&N
31 bytes 
EA       NOP
68       PLA       \ × 15
48       PHA       /
 Clobbers A, and Z&N
36 bytes 
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp
37 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 3
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
38 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
39 bytes 
EA       NOP
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
54 bytes 
18   ... CLC      × 52
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 52
50 00    BVC *+2
 Clobbers V


108 cycles

5 bytes 
A9       LDA #81
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
EA       NOP
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
38       SEC
A9 15    LDA #21
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
08       PHP
A2 14    LDX #20
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 14    LDY #20
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9       LDA #74
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #74
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
00 00    BRK 0
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
9 bytes 
08       PHP
48       PHA
A9       LDA #67
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
EA       NOP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
EA       NOP
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack 
EA       NOP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C; and writes in stack
10 bytes 
48       PHA
38       SEC
A9 0E    LDA #14
EA       NOP
E9 01    SBC #1
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 0E    LDA #14
EA       NOP
E9 01    SBC #1
D0 FA    BNE *-4
28       PLP
 Clobbers A; and writes in stack 
E6 xx    INC @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C; and requires @zptemp 
F6 F6    INC $F6,X
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
18       CLC
10 FA    BPL *-4
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, and C; and writes in stack
11 bytes 
EA   ... NOP      × 3
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; and writes in stack 
EA       NOP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
68       PLA
28       PLP
 Requires @rts12, and @rts14; and writes in stack
12 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP       \ × 2
28       PLP       /
10 F9    BPL *-5
68       PLA
28       PLP
 Writes in stack
27 bytes 
68   ... PLA      × 27
 Clobbers A, S, and Z&N
31 bytes 
68       PLA       \ × 7
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
36 bytes 
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N
54 bytes 
EA   ... NOP      × 54
 No requirements


109 cycles

5 bytes 
A9       LDA #82
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A0 88    LDY #136 ;hides 'DEY'
F6 F6    INC $F6,X
30 FB    BMI *-3
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack 
A2 0C    LDX #12
68       PLA
CA       DEX
D0 FC    BNE *-2
 Clobbers A, X, S, and Z&N 
A0 0C    LDY #12
68       PLA
88       DEY
D0 FC    BNE *-2
 Clobbers A, Y, S, and Z&N
7 bytes 
A6 A6    LDX $A6
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #75
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #75
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
90 FB    BCC *-3
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08       PHP ;first loop only
EA       NOP
30 FB    BMI *-3
 Clobbers A, S, Z&N, C, and V; and writes in stack
8 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
18       CLC
10 F9    BPL *-5
 Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack 
18       CLC
A9 F4    LDA #244 ;hides 'NOP zp,X'
EA       NOP
69 01    ADC #1
D0 F9    BNE *-5
 Clobbers A, Z&N, C, and V; and requires support for unofficial opcodes 
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
20 xx xx JSR @rts14
10 F9    BPL *-5
 Clobbers A, S, Z&N, and C; requires @rts12, and @rts14; and writes in stack
9 bytes 
08       PHP
A2 13    LDX #19
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
F6 F6    INC $F6,X
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V; and requires @zptemp, and writable $00-$FF 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
F6 F6    INC $F6,X
28       PLP
90 F9    BCC *-5
 Clobbers A, Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
20 xx xx JSR @rts14
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
 Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack 
08       PHP
48       PHA
A9       LDA #68
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
EA       NOP
68       PLA
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, S, Z&N, C, and V 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
48   ... PHA      × 2
18       CLC
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 13    LDX #19
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
10 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack 
EA       NOP
38       SEC
A9 0D    LDA #13
24 24    BIT $24
E9 01    SBC #1
D0 F9    BNE *-5
 Clobbers A, Z&N, C, and V 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
E6 xx    INC @zptemp
F6 F6    INC $F6,X
90 F8    BCC *-6
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
EA       NOP
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
18       CLC
D0 F9    BNE *-5
 Clobbers A, S, Z&N, and C
11 bytes 
EA   ... NOP      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C
28 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 25
 Clobbers A, S, and Z&N
31 bytes 
68       PLA       \ × 6
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
37 bytes 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF
38 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
39 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
40 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
55 bytes 
18   ... CLC      × 53
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 53
50 00    BVC *+2
 Clobbers V


110 cycles

5 bytes 
A9       LDA #83
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
68       PLA
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
EA   ... NOP      × 2
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #76
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #76
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
68       PLA
A9 E9    LDA #$E9 ;hides 'SBC #$08'
08       PHP ;first loop only
EA       NOP
30 FB    BMI *-3
 Clobbers A, S, Z&N, C, and V; and writes in stack
8 bytes 
EA       NOP
38       SEC
A9 15    LDA #21
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
EA       NOP
08       PHP
A2 14    LDX #20
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 14    LDY #20
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9       LDA #69
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
18       CLC
D0 F9    BNE *-5
68       PLA
 Clobbers Z&N, and C; and writes in stack 
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C
12 bytes 
48       PHA
8C       TXA
48       PHA
A2 0D    LDX #13
EA       NOP
CA       DEX
D0 FC    BNE *-2
68       PLA
AA       TAX
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
10 FA    BPL *-4
68       PLA
28       PLP
 Requires @rts12, and @rts14; and writes in stack 
08       PHP
28       PLP
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
10 FB    BPL *-3
68       PLA
28       PLP
 Requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
48       PHA
38       SEC
A9 12    LDA #18
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Clobbers S; and writes in stack
13 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP       \ × 2
28       PLP       /
10 F9    BPL *-5
68       PLA
28       PLP
 Writes in stack
28 bytes 
EA       NOP
68   ... PLA      × 27
 Clobbers A, S, and Z&N
32 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA       \ × 14
48       PHA       /
 Clobbers A, and Z&N
37 bytes 
EA       NOP
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N
55 bytes 
EA   ... NOP      × 55
 No requirements


111 cycles

5 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V 
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 16    LDY #22
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and writes in stack 
48       PHA
A9       LDA #77
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #77
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
08       PHP
A2 14    LDX #20
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 14    LDY #20
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
18   ... CLC      × 2
90 00    BCC *+2
18       CLC
D0 F8    BNE *-6
 Clobbers A, Z&N, and C 
08       PHP
A6 A6    LDX $A6
A2 14    LDX #20
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 14    LDY #20
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #70
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
18       CLC
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
18       CLC
10 F9    BPL *-5
28       PLP
 Clobbers A; requires @rts12, and @rts14; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
00 00    BRK 0
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and dummy interrupt handler; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
00 00    BRK 0
10 F9    BPL *-5
28       PLP
 Clobbers A; requires @zptemp, and dummy interrupt handler; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
00 00    BRK 0
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
00 00    BRK 0
10 F9    BPL *-5
28       PLP
 Clobbers A; requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
68       PLA
98       TYA
48       PHA
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
 Clobbers A, S, and Z&N; and writes in stack 
48   ... PHA      × 2
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
EA       NOP
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
48       PHA
08       PHP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
EA       NOP
D0 FB    BNE *-3
28       PLP
 Clobbers A, and S; requires support for unofficial opcodes; and writes in stack
11 bytes 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
28 bytes 
68       PLA
48       PHA
68   ... PLA      × 26
 Clobbers A, S, and Z&N
32 bytes 
EA       NOP
68       PLA       \ × 6
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
38 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
39 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
41 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
56 bytes 
18   ... CLC      × 54
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 54
50 00    BVC *+2
 Clobbers V


112 cycles

5 bytes 
A9       LDA #85
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
7 bytes 
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9       LDA #78
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #78
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48   ... PHA      × 2
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack 
EA       NOP
68       PLA
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
EA       NOP
68       PLA
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
8 bytes 
EA   ... NOP      × 3
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
68       PLA
38       SEC
A9 15    LDA #21
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, S, Z&N, C, and V 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
90 FB    BCC *-3
 Clobbers A, S, Z&N, and C; requires dummy interrupt handler; and writes in stack
9 bytes 
EA   ... NOP      × 2
38       SEC
A9 15    LDA #21
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
8C       TXA
48       PHA
A2 14    LDX #20
CA       DEX
D0 FD    BNE *-1
68       PLA
AA       TAX
 Clobbers A, and Z&N; and writes in stack 
08       PHP
A2 0D    LDX #13
24 24    BIT $24
CA       DEX
D0 FB    BNE *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 0D    LDY #13
C5 C5    CMP $C5
88       DEY
D0 FB    BNE *-3
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #71
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
EA       NOP
48       PHA
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
EA       NOP
08       PHP
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 13    LDA #19
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack 
EA       NOP
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C
28 bytes 
68   ... PLA      × 28
 Clobbers A, S, and Z&N
32 bytes 
68       PLA       \ × 16
48       PHA       /
 Clobbers A, and Z&N
38 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
56 bytes 
EA   ... NOP      × 56
 No requirements


113 cycles

5 bytes 
A9       LDA #86
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V 
A2 10    LDX #16
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 10    LDY #16
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
7 bytes 
08       PHP
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9       LDA #79
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #79
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and writes in stack
9 bytes 
08       PHP
48       PHA
A9       LDA #72
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
18   ... CLC      × 2
90 00    BCC *+2
18       CLC
D0 F8    BNE *-6
 Clobbers A, Z&N, and C 
48   ... PHA      × 2
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack 
48       PHA
08       PHP
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A, and S; and writes in stack
11 bytes 
24 24    BIT $24
48       PHA
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A5 A5    LDA $A5
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
10 FA    BPL *-4
68       PLA
28       PLP
 Requires @rts12, and @rts15; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
18       CLC
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
18       CLC
10 FA    BPL *-4
68       PLA
28       PLP
 Requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 3
18       CLC
D0 F9    BNE *-5
68       PLA
 Clobbers S, Z&N, and C; and writes in stack
12 bytes 
EA   ... NOP      × 2
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
29 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 26
 Clobbers A, S, and Z&N
33 bytes 
68       PLA       \ × 6
48       PHA       /
36 36    ROL $36,X
76 36    ROR $36,X
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
38 bytes 
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp
39 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N, and V 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 8
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
40 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
42 bytes 
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
57 bytes 
18   ... CLC      × 55
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 55
50 00    BVC *+2
 Clobbers V


114 cycles

5 bytes 
A9       LDA #87
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack 
48       PHA
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48       PHA
A0 16    LDY #22
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack
7 bytes 
A5 A5    LDA $A5
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V 
A6 A6    LDX $A6
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 16    LDY #22
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #80
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #80
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
08       PHP
A2 18    LDX #24 ;hides 'CLC'
CA   ... DEX      × 2
D0 FB    BNE *-3
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 18    LDY #24 ;hides 'CLC'
88   ... DEY      × 2
D0 FB    BNE *-3
28       PLP
 Clobbers Y; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C; and writes in stack
9 bytes 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and writes in stack 
08       PHP
48       PHA
A9       LDA #73
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
EA       NOP
8C       TXA
48       PHA
A2 14    LDX #20
CA       DEX
D0 FD    BNE *-1
68       PLA
AA       TAX
 Clobbers A, and Z&N; and writes in stack
11 bytes 
48       PHA
98       TYA
48       PHA
A0 13    LDY #19
88       DEY
D0 FD    BNE *-1
68       PLA
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
18   ... CLC      × 2
90 00    BCC *+2
18       CLC
D0 F8    BNE *-6
 Clobbers A, Z&N, and C 
08       PHP
38       SEC
A9 0D    LDA #13
24 24    BIT $24
E9 01    SBC #1
D0 F9    BNE *-5
28       PLP
 Clobbers A; and writes in stack
12 bytes 
EA       NOP
08       PHP
48       PHA
38       SEC
A9 13    LDA #19
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
29 bytes 
EA       NOP
68   ... PLA      × 28
 Clobbers A, S, and Z&N
33 bytes 
EA       NOP
68       PLA       \ × 16
48       PHA       /
 Clobbers A, and Z&N
38 bytes 
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
57 bytes 
EA   ... NOP      × 57
 No requirements


115 cycles

5 bytes 
A9       LDA #88
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
68       PLA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V 
68       PLA
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 16    LDY #22
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N
7 bytes 
EA   ... NOP      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V 
EA   ... NOP      × 2
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 16    LDY #22
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #81
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #81
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
08       PHP
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
90 FA    BCC *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts14; and writes in stack 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C; and writes in stack
9 bytes 
48       PHA
38       SEC
A9 15    LDA #21
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
38       SEC
A9 15    LDA #21
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9       LDA #74
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
36 36    ROL $36,X
76 36    ROR $36,X
90 F8    BCC *-6
 Clobbers A, Z&N, and C 
00 00    BRK 0
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
EA       NOP
D0 FB    BNE *-3
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack
12 bytes 
08       PHP
48       PHA
38       SEC
A9 0E    LDA #14
EA       NOP
E9 01    SBC #1
D0 FA    BNE *-4
68       PLA
28       PLP
 Writes in stack
29 bytes 
68       PLA
48       PHA
68   ... PLA      × 27
 Clobbers A, S, and Z&N
33 bytes 
68       PLA       \ × 8
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
39 bytes 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
40 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
41 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
42 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
58 bytes 
18   ... CLC      × 56
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 56
50 00    BVC *+2
 Clobbers V


116 cycles

5 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V 
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 17    LDY #23
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9       LDA #82
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #82
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
F6 F6    INC $F6,X
30 FB    BMI *-3
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
48       PHA
08       PHP
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
08       PHP
A6 A6    LDX $A6
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
E6 xx    INC @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; requires @zptemp; and writes in stack 
08       PHP
48       PHA
A9       LDA #75
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
90 FB    BCC *-3
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack 
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
90 FB    BCC *-3
28       PLP
 Clobbers A; requires dummy interrupt handler; and writes in stack 
EA       NOP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C; and writes in stack
10 bytes 
EA       NOP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
 Clobbers A, Z&N, and C; and writes in stack 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
18       CLC
10 F9    BPL *-5
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack 
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
18       CLC
10 F9    BPL *-5
28       PLP
 Clobbers A; requires @rts12, and @rts15; and writes in stack 
48       PHA
18       CLC
A9 F4    LDA #244 ;hides 'NOP zp,X'
EA       NOP
69 01    ADC #1
D0 F9    BNE *-5
68       PLA
 Clobbers Z&N, C, and V; requires support for unofficial opcodes; and writes in stack 
08       PHP
18       CLC
A9 F4    LDA #244 ;hides 'NOP zp,X'
EA       NOP
69 01    ADC #1
D0 F9    BNE *-5
28       PLP
 Clobbers A; requires support for unofficial opcodes; and writes in stack 
68       PLA
8C       TXA
48       PHA
A2 14    LDX #20
CA       DEX
D0 FD    BNE *-1
68       PLA
AA       TAX
 Clobbers A, S, and Z&N; and writes in stack
11 bytes 
98       TYA
48       PHA
A0 0D    LDY #13
A5 A5    LDA $A5
88       DEY
D0 FB    BNE *-3
68       PLA
A8       TAY
 Clobbers A, and Z&N; and writes in stack 
E6 xx    INC @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
18   ... CLC      × 2
90 00    BCC *+2
18       CLC
D0 F8    BNE *-6
 Clobbers A, Z&N, and C; and requires @zptemp 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
F6 F6    INC $F6,X
28       PLP
90 F9    BCC *-5
68       PLA
 Clobbers Z&N, and C; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
F6 F6    INC $F6,X
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack 
20 xx xx JSR @rts14
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack 
20 xx xx JSR @rts14
08       PHP
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
28       PLP
 Clobbers A; requires @rts12, and @rts14; and writes in stack 
48   ... PHA      × 3
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack 
48   ... PHA      × 2
08       PHP
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A, and S; and writes in stack
12 bytes 
08       PHP
28       PLP
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack 
EA       NOP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
18   ... CLC      × 2
90 00    BCC *+2
18       CLC
D0 F8    BNE *-6
 Clobbers A, Z&N, and C
29 bytes 
68   ... PLA      × 29
 Clobbers A, S, and Z&N
33 bytes 
68       PLA       \ × 7
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
39 bytes 
EA       NOP
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
58 bytes 
EA   ... NOP      × 58
 No requirements


117 cycles

5 bytes 
A9       LDA #90
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
7 bytes 
A2 0D    LDX #13 ;hides 'ORA abs'
A5 A5    LDA $A5
CA       DEX
D0 FA    BNE *-4
 Clobbers A, X, and Z&N 
A0 0D    LDY #13 ;hides 'ORA abs'
A5 A5    LDA $A5
88       DEY
D0 FA    BNE *-4
 Clobbers A, Y, and Z&N 
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
F6 F6    INC $F6,X
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; and requires @zptemp, and writable $00-$FF 
F6 F6    INC $F6,X
A0 16    LDY #22
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N; and requires @zptemp, and writable $00-$FF 
48       PHA
A9       LDA #83
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #83
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A2 0C    LDX #12 ;hides 'NOP abs'
44 00    NOP $0
CA       DEX
10 FA    BPL *-4
 Clobbers X, and Z&N; and requires support for unofficial opcodes 
A0 0C    LDY #12 ;hides 'NOP abs'
44 00    NOP $0
88       DEY
10 FA    BPL *-4
 Clobbers Y, and Z&N; and requires support for unofficial opcodes 
EA       NOP
68       PLA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, S, Z&N, C, and V 
48   ... PHA      × 2
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack 
48   ... PHA      × 2
A0 16    LDY #22
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack
8 bytes 
EA   ... NOP      × 3
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V 
EA   ... NOP      × 3
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 3
A0 16    LDY #22
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
9 bytes 
8C       TXA
48       PHA
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
68       PLA
AA       TAX
 Clobbers A, and Z&N; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #76
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
EA       NOP
48       PHA
38       SEC
A9 15    LDA #21
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
EA       NOP
08       PHP
38       SEC
A9 15    LDA #21
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack 
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
36 36    ROL $36,X
76 36    ROR $36,X
90 F8    BCC *-6
 Clobbers A, Z&N, and C
30 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 27
 Clobbers A, S, and Z&N
34 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA       \ × 15
48       PHA       /
 Clobbers A, and Z&N
40 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
41 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
42 bytes 
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
59 bytes 
18   ... CLC      × 57
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 57
50 00    BVC *+2
 Clobbers V


118 cycles

5 bytes 
A9       LDA #91
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V 
EA       NOP
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 17    LDY #23
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 16    LDY #22
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
48       PHA
A9       LDA #77
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
11 bytes 
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18   ... CLC      × 2
90 00    BCC *+2
18       CLC
D0 F8    BNE *-6
 Clobbers A, Z&N, and C
12 bytes 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
18       CLC
10 F9    BPL *-5
68       PLA
28       PLP
 Requires @rts12, and @rts14; and writes in stack 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
85 xx    STA @zptemp
00 00    BRK 0
10 F9    BPL *-5
68       PLA
28       PLP
 Requires @zptemp, and dummy interrupt handler; and writes in stack 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
04 04    NOP $04
00 00    BRK 0
10 F9    BPL *-5
68       PLA
28       PLP
 Requires dummy interrupt handler, and support for unofficial opcodes; and writes in stack 
48       PHA
08       PHP
48       PHA
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$5A'
5A       NOP ;first loop only
EA       NOP
D0 FB    BNE *-3
68       PLA
28       PLP
 Clobbers S; requires support for unofficial opcodes; and writes in stack
13 bytes 
EA       NOP
08       PHP
28       PLP
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
30 bytes 
EA       NOP
68   ... PLA      × 29
 Clobbers A, S, and Z&N
34 bytes 
EA       NOP
68       PLA       \ × 7
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
40 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N
59 bytes 
EA   ... NOP      × 59
 No requirements


119 cycles

5 bytes 
A9       LDA #92
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A0 88    LDY #136 ;hides 'DEY'
08       PHP
28       PLP
30 FB    BMI *-3
 Clobbers Y, and Z&N; and writes in stack 
A0 88    LDY #136 ;hides 'DEY'
68       PLA
48       PHA
30 FB    BMI *-3
 Clobbers A, Y, and Z&N 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, S, Z&N, C, and V; and writes in stack 
48       PHA
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack
7 bytes 
A5 A5    LDA $A5
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V 
A6 A6    LDX $A6
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A4 A4    LDY $A4
A0 17    LDY #23
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #85
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #85
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
48       PHA
08       PHP
28       PLP
D0 FA    BNE *-4
 Clobbers A, S, Z&N, and C; and writes in stack
8 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
24 24    BIT $24
28       PLP
D0 F9    BNE *-5
 Clobbers A, Z&N, and C; and writes in stack
9 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 4
18       CLC
D0 F8    BNE *-6
 Clobbers A, Z&N, and C 
08       PHP
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9       LDA #78
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
10 bytes 
EA       NOP
8C       TXA
48       PHA
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
68       PLA
AA       TAX
 Clobbers A, and Z&N; and writes in stack 
EA   ... NOP      × 3
08       PHP
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 3
08       PHP
A0 15    LDY #21
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
48   ... PHA      × 2
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
90 FB    BCC *-3
68       PLA
 Clobbers S, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48       PHA
08       PHP
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
90 FB    BCC *-3
28       PLP
 Clobbers A, and S; requires dummy interrupt handler; and writes in stack
11 bytes 
48       PHA
8C       TXA
48       PHA
A2 14    LDX #20
CA       DEX
D0 FD    BNE *-1
68       PLA
AA       TAX
68       PLA
 Clobbers Z&N; and writes in stack 
EA   ... NOP      × 2
08       PHP
38       SEC
A9 15    LDA #21
E9 01    SBC #1
D0 FB    BNE *-3
28       PLP
 Clobbers A; and writes in stack
12 bytes 
EA       NOP
08       PHP
48       PHA
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
30 bytes 
68       PLA
48       PHA
68   ... PLA      × 28
 Clobbers A, S, and Z&N
34 bytes 
68       PLA       \ × 17
48       PHA       /
 Clobbers A, and Z&N
40 bytes 
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp
41 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 4
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
42 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
43 bytes 
EA       NOP
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
60 bytes 
18   ... CLC      × 58
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 58
50 00    BVC *+2
 Clobbers V


120 cycles

5 bytes 
A9       LDA #93
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
6 bytes 
A2 11    LDX #17
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 11    LDY #17
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N 
68       PLA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, S, Z&N, C, and V
7 bytes 
EA   ... NOP      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V 
48       PHA
A9       LDA #86
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #86
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 10    LDX #16
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 10    LDY #16
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
08       PHP
48       PHA
A9       LDA #79
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack
12 bytes 
EA       NOP
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
18   ... CLC      × 2
90 00    BCC *+2
18       CLC
D0 F8    BNE *-6
 Clobbers A, Z&N, and C 
48       PHA
08       PHP
48       PHA
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Clobbers S; and writes in stack
13 bytes 
08       PHP
24 24    BIT $24
48       PHA
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
30 bytes 
68   ... PLA      × 30
 Clobbers A, S, and Z&N
35 bytes 
68       PLA       \ × 7
48       PHA       /
36 36    ROL $36,X
76 36    ROR $36,X
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
40 bytes 
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N
60 bytes 
EA   ... NOP      × 60
 No requirements


121 cycles

5 bytes 
A2 18    LDX #24
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
A9       LDA #94
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
7 bytes 
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
08       PHP
28       PLP
30 FA    BMI *-4
 Clobbers A, Z&N, C, and V; and writes in stack 
E6 xx    INC @zptemp
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V; and requires @zptemp 
48       PHA
A9       LDA #87
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #87
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
EA       NOP
A5 A5    LDA $A5
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
90 FA    BCC *-4
 Clobbers A, Z&N, and C; requires @rts12, and @rts15; and writes in stack 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
00 00    BRK 0
90 FA    BCC *-4
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack 
48       PHA
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A, and S; and writes in stack 
48       PHA
08       PHP
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48       PHA
08       PHP
A0 16    LDY #22
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
9 bytes 
24 24    BIT $24
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A5 A5    LDA $A5
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A6 A6    LDX $A6
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A4 A4    LDY $A4
A0 16    LDY #22
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #80
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 4
18       CLC
D0 F8    BNE *-6
 Clobbers A, Z&N, and C 
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers S, Z&N, and C; and writes in stack
11 bytes 
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack
12 bytes 
EA       NOP
48       PHA
8C       TXA
48       PHA
A2 14    LDX #20
CA       DEX
D0 FD    BNE *-1
68       PLA
AA       TAX
68       PLA
 Clobbers Z&N; and writes in stack
13 bytes 
EA   ... NOP      × 2
08       PHP
48       PHA
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
31 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 28
 Clobbers A, S, and Z&N
35 bytes 
EA       NOP
68       PLA       \ × 17
48       PHA       /
 Clobbers A, and Z&N
41 bytes 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF
42 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
43 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
44 bytes 
EA   ... NOP      × 2
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
61 bytes 
18   ... CLC      × 59
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 59
50 00    BVC *+2
 Clobbers V


122 cycles

6 bytes 
EA       NOP
A9       LDA #93
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
7 bytes 
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
EA       NOP
10 FB    BPL *-3
 Clobbers A, Z&N, C, V, and D 
EA       NOP
A2 11    LDX #17
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
EA       NOP
A0 11    LDY #17
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N 
F6 F6    INC $F6,X
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V; and requires @zptemp, and writable $00-$FF 
48       PHA
A9       LDA #88
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #88
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
EA       NOP
68       PLA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, S, Z&N, C, and V
8 bytes 
38       SEC
A9 11    LDA #17
EA       NOP
E9 01    SBC #1
D0 FA    BNE *-4
 Clobbers A, Z&N, C, and V 
68       PLA
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A, S, and Z&N; and writes in stack
9 bytes 
EA   ... NOP      × 2
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
EA       NOP
10 FB    BPL *-3
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 2
08       PHP
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 2
08       PHP
A0 16    LDY #22
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
08       PHP
48       PHA
A9       LDA #81
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts14
90 FA    BCC *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts14; and writes in stack
11 bytes 
08       PHP
48       PHA
38       SEC
A9 15    LDA #21
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack 
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 4
18       CLC
D0 F8    BNE *-6
 Clobbers A, Z&N, and C
31 bytes 
EA       NOP
68   ... PLA      × 30
 Clobbers A, S, and Z&N
35 bytes 
68       PLA       \ × 9
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
41 bytes 
EA       NOP
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N
61 bytes 
EA   ... NOP      × 61
 No requirements


123 cycles

6 bytes 
EA       NOP
A2 18    LDX #24
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA       NOP
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
EA       NOP
A9       LDA #94
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks
7 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
38       SEC
A9 18    LDA #24
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 17    LDY #23
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
08       PHP
48       PHA
A9       LDA #82
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 4
18       CLC
D0 F8    BNE *-6
 Clobbers A, S, Z&N, and C
11 bytes 
EA   ... NOP      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 4
18       CLC
D0 F8    BNE *-6
 Clobbers A, Z&N, and C 
E6 xx    INC @zptemp
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; requires @zptemp; and writes in stack 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
90 FB    BCC *-3
68       PLA
28       PLP
 Requires dummy interrupt handler; and writes in stack 
EA       NOP
48   ... PHA      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers S, Z&N, and C; and writes in stack
12 bytes 
EA       NOP
C5 C5    CMP $C5
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
18       CLC
D0 FA    BNE *-4
68       PLA
 Clobbers Z&N, and C; and writes in stack 
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
18       CLC
10 F9    BPL *-5
68       PLA
28       PLP
 Requires @rts12, and @rts15; and writes in stack 
08       PHP
48       PHA
18       CLC
A9 F4    LDA #244 ;hides 'NOP zp,X'
EA       NOP
69 01    ADC #1
D0 F9    BNE *-5
68       PLA
28       PLP
 Requires support for unofficial opcodes; and writes in stack
13 bytes 
48       PHA
98       TYA
48       PHA
A0 0D    LDY #13
A5 A5    LDA $A5
88       DEY
D0 FB    BNE *-3
68       PLA
A8       TAY
68       PLA
 Clobbers Z&N; and writes in stack 
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
F6 F6    INC $F6,X
28       PLP
90 F9    BCC *-5
68       PLA
28       PLP
 Requires @zptemp, and writable $00-$FF; and writes in stack 
20 xx xx JSR @rts14
08       PHP
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
D0 FB    BNE *-3
68       PLA
28       PLP
 Requires @rts12, and @rts14; and writes in stack 
48   ... PHA      × 2
08       PHP
48       PHA
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Clobbers S; and writes in stack
14 bytes 
EA   ... NOP      × 3
08       PHP
48       PHA
38       SEC
A9 14    LDA #20
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
31 bytes 
68       PLA
48       PHA
68   ... PLA      × 29
 Clobbers A, S, and Z&N
35 bytes 
68       PLA       \ × 8
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
42 bytes 
C5 C5    CMP $C5
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N, and C 
24 24    BIT $24
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N, and V 
E6 xx    INC @zptemp
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
EA       NOP
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $200-$2FF 
EA       NOP
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $300-$3FF 
EA       NOP
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $400-$4FF 
EA       NOP
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $500-$5FF 
EA       NOP
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $600-$6FF 
EA       NOP
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires writable $700-$7FF 
04 04    NOP $04
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
43 bytes 
4C xx xx JMP *+3
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
45 bytes 
EA   ... NOP      × 3
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
62 bytes 
18   ... CLC      × 60
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 60
50 00    BVC *+2
 Clobbers V


124 cycles

4 bytes 
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
 Clobbers X, and Z&N
6 bytes 
48       PHA
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
 Clobbers Y, S, and Z&N; and writes in stack 
68       PLA
A9       LDA #93
20 xx xx JSR delay_a_25_clocks
 Clobbers A, S, Z&N, C, and V; and requires delay_a_25_clocks
7 bytes 
A4 A4    LDY $A4
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #90
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
A5 A5    LDA $A5
A9       LDA #94
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks 
08       PHP
A9       LDA #90
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
00 00    BRK 0
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; requires dummy interrupt handler; and writes in stack 
68   ... PLA      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, S, Z&N, C, and V
8 bytes 
EA       NOP
38       SEC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
EA       NOP
10 FB    BPL *-3
 Clobbers A, Z&N, C, V, and D 
EA       NOP
F6 F6    INC $F6,X
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, Z&N, C, and V; and requires @zptemp, and writable $00-$FF 
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
28       PLP
00 00    BRK 0
10 F9    BPL *-5
 Clobbers A, Z&N, and C; requires dummy interrupt handler; and writes in stack
9 bytes 
EA       NOP
38       SEC
A9 11    LDA #17
EA       NOP
E9 01    SBC #1
D0 FA    BNE *-4
 Clobbers A, Z&N, C, and V 
08       PHP
A2 0D    LDX #13 ;hides 'ORA abs'
A5 A5    LDA $A5
CA       DEX
D0 FA    BNE *-4
28       PLP
 Clobbers A, and X; and writes in stack 
08       PHP
A0 0D    LDY #13 ;hides 'ORA abs'
A5 A5    LDA $A5
88       DEY
D0 FA    BNE *-4
28       PLP
 Clobbers A, and Y; and writes in stack 
08       PHP
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
F6 xx    INC @zptemp,X
28       PLP
 Clobbers X; requires @zptemp; and writes in stack 
F6 F6    INC $F6,X
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
F6 F6    INC $F6,X
A0 16    LDY #22
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; requires @zptemp, and writable $00-$FF; and writes in stack 
08       PHP
48       PHA
A9       LDA #83
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack 
08       PHP
A2 0C    LDX #12 ;hides 'NOP abs'
44 00    NOP $0
CA       DEX
10 FA    BPL *-4
28       PLP
 Clobbers X; requires support for unofficial opcodes; and writes in stack 
08       PHP
A0 0C    LDY #12 ;hides 'NOP abs'
44 00    NOP $0
88       DEY
10 FA    BPL *-4
28       PLP
 Clobbers Y; requires support for unofficial opcodes; and writes in stack 
48   ... PHA      × 3
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack 
48   ... PHA      × 2
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
28       PLP
 Clobbers A, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack 
48   ... PHA      × 2
08       PHP
A0 16    LDY #22
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y, and S; and writes in stack
10 bytes 
EA   ... NOP      × 3
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
EA       NOP
08       PHP
18       CLC
A9 69    LDA #$69 ;hides 'ADC #$F8'
F8       SED ;first loop only
EA       NOP
10 FB    BPL *-3
28       PLP
 Clobbers A; and writes in stack 
EA   ... NOP      × 3
08       PHP
A2 16    LDX #22
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA   ... NOP      × 3
08       PHP
A0 16    LDY #22
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack
11 bytes 
48       PHA
8C       TXA
48       PHA
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
68       PLA
AA       TAX
68       PLA
 Clobbers Z&N; and writes in stack 
E6 xx    INC @zptemp
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 4
18       CLC
D0 F8    BNE *-6
 Clobbers A, Z&N, and C; and requires @zptemp
12 bytes 
EA       NOP
08       PHP
48       PHA
38       SEC
A9 15    LDA #21
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack 
EA       NOP
A5 A5    LDA $A5
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 4
18       CLC
D0 F8    BNE *-6
 Clobbers A, Z&N, and C
31 bytes 
68   ... PLA      × 31
 Clobbers A, S, and Z&N
36 bytes 
36 36    ROL $36,X
76 36    ROR $36,X
68       PLA       \ × 16
48       PHA       /
 Clobbers A, and Z&N
42 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
62 bytes 
EA   ... NOP      × 62
 No requirements


125 cycles

6 bytes 
A2 1A    LDX #26 ;hides 'NOP'
CA   ... DEX      × 2
10 FB    BPL *-3
 Clobbers X, and Z&N; and requires support for unofficial opcodes 
A0 1A    LDY #26 ;hides 'NOP'
88   ... DEY      × 2
10 FB    BPL *-3
 Clobbers Y, and Z&N; and requires support for unofficial opcodes 
68       PLA
A2 18    LDX #24
CA       DEX
D0 FD    BNE *-1
 Clobbers A, X, S, and Z&N 
68       PLA
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
 Clobbers A, Y, S, and Z&N 
68       PLA
A9       LDA #94
20 xx xx JSR delay_a_25_clocks
 Clobbers A, S, Z&N, C, and V; and requires delay_a_25_clocks
7 bytes 
EA   ... NOP      × 2
A2 18    LDX #24
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
EA   ... NOP      × 2
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N 
48       PHA
A9       LDA #91
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
EA   ... NOP      × 2
A9       LDA #94
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks 
08       PHP
A9       LDA #91
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
48       PHA
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
EA       NOP
38       SEC
A9 18    LDA #24
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
08       PHP
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A; and writes in stack 
EA       NOP
08       PHP
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
EA       NOP
08       PHP
A0 17    LDY #23
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack
9 bytes 
08       PHP
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
28       PLP
 Writes in stack
11 bytes 
F6 F6    INC $F6,X
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 4
18       CLC
D0 F8    BNE *-6
 Clobbers A, Z&N, and C; and requires @zptemp, and writable $00-$FF 
EA       NOP
68       PLA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 4
18       CLC
D0 F8    BNE *-6
 Clobbers A, S, Z&N, and C
12 bytes 
EA   ... NOP      × 3
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 4
18       CLC
D0 F8    BNE *-6
 Clobbers A, Z&N, and C
32 bytes 
EA       NOP
68       PLA
48       PHA
68   ... PLA      × 29
 Clobbers A, S, and Z&N
36 bytes 
EA       NOP
68       PLA       \ × 8
48       PHA       /
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 14
10 EE    BPL *-16
 Clobbers A, and Z&N
42 bytes 
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp
43 bytes 
EA       NOP
C5 C5    CMP $C5
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N, and C 
EA       NOP
24 24    BIT $24
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N, and V 
FE 00 02 INC $0200,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 9
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF 
EA       NOP
04 04    NOP $04
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires support for unofficial opcodes
44 bytes 
EA       NOP
4C xx xx JMP *+3
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and not relocatable code
46 bytes 
26 26    ROL $26   \ × 2
66 26    ROR $26   /
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
63 bytes 
18   ... CLC      × 61
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 61
50 00    BVC *+2
 Clobbers V


126 cycles

5 bytes 
A2 19    LDX #25
CA       DEX
D0 FD    BNE *-1
 Clobbers X, and Z&N 
A0 19    LDY #25
88       DEY
D0 FD    BNE *-1
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9       LDA #92
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
68       PLA
48       PHA
A9       LDA #92
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks 
08       PHP
A9       LDA #92
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
08       PHP
A0 88    LDY #136 ;hides 'DEY'
08       PHP
28       PLP
30 FB    BMI *-3
28       PLP
 Clobbers Y; and writes in stack 
20 xx xx JSR @rts15
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; requires @rts12, and @rts15; and writes in stack 
EA       NOP
00 00    BRK 0
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
 Clobbers A, Z&N, C, and V; requires dummy interrupt handler; and writes in stack 
48   ... PHA      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers S, Z&N, C, and V; and writes in stack 
EA       NOP
68   ... PLA      × 2
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
 Clobbers A, S, Z&N, C, and V 
48       PHA
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A, and S; and writes in stack 
48       PHA
08       PHP
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X, and S; and writes in stack
9 bytes 
24 24    BIT $24
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
A5 A5    LDA $A5
38       SEC
A9 18    LDA #24
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
08       PHP
A5 A5    LDA $A5
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
A6 A6    LDX $A6
A2 17    LDX #23
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
48       PHA
A9       LDA #85
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
08       PHP
24 24    BIT $24
28       PLP
D0 F9    BNE *-5
68       PLA
 Clobbers Z&N, and C; and writes in stack
11 bytes 
68       PLA
48       PHA
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 4
18       CLC
D0 F8    BNE *-6
 Clobbers A, Z&N, and C
12 bytes 
EA       NOP
48       PHA
8C       TXA
48       PHA
A2 15    LDX #21
CA       DEX
D0 FD    BNE *-1
68       PLA
AA       TAX
68       PLA
 Clobbers Z&N; and writes in stack 
48       PHA
08       PHP
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
00 00    BRK 0
90 FB    BCC *-3
68       PLA
28       PLP
 Clobbers S; requires dummy interrupt handler; and writes in stack
13 bytes 
EA   ... NOP      × 2
08       PHP
48       PHA
38       SEC
A9 15    LDA #21
E9 01    SBC #1
D0 FB    BNE *-3
68       PLA
28       PLP
 Writes in stack
32 bytes 
EA       NOP
68   ... PLA      × 31
 Clobbers A, S, and Z&N
36 bytes 
68       PLA       \ × 18
48       PHA       /
 Clobbers A, and Z&N
42 bytes 
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N
63 bytes 
EA   ... NOP      × 63
 No requirements


127 cycles

5 bytes 
48       PHA
A2 E8    LDX #232 ;hides 'INX'
D0 FD    BNE *-1
 Clobbers X, S, and Z&N; and writes in stack
6 bytes 
A2 12    LDX #18
EA       NOP
CA       DEX
D0 FC    BNE *-2
 Clobbers X, and Z&N 
A0 12    LDY #18
EA       NOP
88       DEY
D0 FC    BNE *-2
 Clobbers Y, and Z&N
7 bytes 
48       PHA
A9       LDA #93
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
68       PLA
48       PHA
A9       LDA #93
20 xx xx JSR delay_a_25_clocks
 Clobbers A, Z&N, C, and V; and requires delay_a_25_clocks 
08       PHP
A9       LDA #93
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack 
A9 E9    LDA #$E9 ;hides 'SBC #$2A'
2A       ROL A ;first loop only
00 00    BRK 0
B0 FA    BCS *-4
 Clobbers A, Z&N, C, and V; requires dummy interrupt handler; and writes in stack
8 bytes 
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
08       PHP
28       PLP
18       CLC
D0 F9    BNE *-5
 Clobbers A, Z&N, and C; and writes in stack 
08       PHP
A2 11    LDX #17
EA       NOP
CA       DEX
D0 FC    BNE *-2
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 11    LDY #17
EA       NOP
88       DEY
D0 FC    BNE *-2
28       PLP
 Clobbers Y; and writes in stack 
68       PLA
38       SEC
A9 18    LDA #24
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, S, Z&N, C, and V 
68       PLA
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A, S, and Z&N; and writes in stack
9 bytes 
EA   ... NOP      × 2
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
EA   ... NOP      × 2
38       SEC
A9 18    LDA #24
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
EA   ... NOP      × 2
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
B0 FC    BCS *-2
28       PLP
 Clobbers A; and writes in stack 
08       PHP
48       PHA
A9       LDA #86
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
08       PHP
48       PHA
18       CLC
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
28       PLP
 Writes in stack 
A9 0A    LDA #$0A ;hides 'ASL A'
18   ... CLC      × 3
90 00    BCC *+2
18       CLC
D0 F7    BNE *-7
 Clobbers A, Z&N, and C
32 bytes 
68       PLA
48       PHA
68   ... PLA      × 30
 Clobbers A, S, and Z&N
37 bytes 
68       PLA       \ × 8
48       PHA       /
36 36    ROL $36,X
76 36    ROR $36,X
A9 09    LDA #$09 ;hides 'ORA #$EA'
EA       NOP ;first loop only
EA   ... NOP      × 12
10 F0    BPL *-14
 Clobbers A, and Z&N
43 bytes 
EA       NOP
E6 xx    INC @zptemp
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires @zptemp 
FE 00 02 INC $0200,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $200-$2FF 
FE 00 03 INC $0300,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $300-$3FF 
FE 00 04 INC $0400,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $400-$4FF 
FE 00 05 INC $0500,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $500-$5FF 
FE 00 06 INC $0600,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $600-$6FF 
FE 00 07 INC $0700,X
36 36    ROL $36,X \ × 10
76 36    ROR $36,X /
 Clobbers Z&N; and requires writable $700-$7FF
44 bytes 
C5 C5    CMP $C5
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and C 
24 24    BIT $24
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N, and V 
04 04    NOP $04
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and requires support for unofficial opcodes
45 bytes 
4C xx xx JMP *+3
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 5
76 36    ROR $36,X /
36 36... ROL $36,X× 9
 Clobbers Z&N; and not relocatable code
46 bytes 
26 26    ROL $26
66 26    ROR $26
36 36    ROL $36,X \ × 6
76 36    ROR $36,X /
26 26... ROL $26  × 9
 Clobbers Z&N
64 bytes 
18   ... CLC      × 62
90 00    BCC *+2
 Clobbers C 
B8   ... CLV      × 62
50 00    BVC *+2
 Clobbers V


128 cycles

7 bytes 
38       SEC
A9 19    LDA #25
E9 01    SBC #1
D0 FB    BNE *-3
 Clobbers A, Z&N, C, and V 
08       PHP
A2 18    LDX #24
CA       DEX
D0 FD    BNE *-1
28       PLP
 Clobbers X; and writes in stack 
08       PHP
A0 18    LDY #24
88       DEY
D0 FD    BNE *-1
28       PLP
 Clobbers Y; and writes in stack 
A2 0D    LDX #13 ;hides 'ORA abs'
E6 xx    INC @zptemp
CA       DEX
10 FA    BPL *-4
 Clobbers A, X, and Z&N; and requires @zptemp 
A0 0D    LDY #13 ;hides 'ORA abs'
E6 xx    INC @zptemp
88       DEY
10 FA    BPL *-4
 Clobbers A, Y, and Z&N; and requires @zptemp 
48       PHA
A9       LDA #94
20 xx xx JSR delay_a_25_clocks
68       PLA
 Clobbers Z&N, C, and V; requires delay_a_25_clocks; and writes in stack 
08       PHP
A9       LDA #94
20 xx xx JSR delay_a_25_clocks
28       PLP
 Clobbers A; requires delay_a_25_clocks; and writes in stack
8 bytes 
A2 14    LDX #20 ;hides 'NOP zp,X'
04 EA    NOP $EA ;hides 'NOP'
CA   ... DEX      × 2
D0 F9    BNE *-5
 Clobbers X, and Z&N; and requires support for unofficial opcodes 
A0 14    LDY #20 ;hides 'NOP zp,X'
04 EA    NOP $EA ;hides 'NOP'
88   ... DEY      × 2
D0 F9    BNE *-5
 Clobbers Y, and Z&N; and requires support for unofficial opcodes 
A2 09    LDX #9 ;hides 'ORA #imm'
A5 68    LDA $68 ;hides 'PLA'
EA       NOP
CA       DEX
10 F9    BPL *-5
 Clobbers A, X, S, and Z&N 
A0 09    LDY #9 ;hides 'ORA #imm'
A5 68    LDA $68 ;hides 'PLA'
EA       NOP
88       DEY
10 F9    BPL *-5
 Clobbers A, Y, S, and Z&N
9 bytes 
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
08       PHP
28       PLP
30 FA    BMI *-4
68       PLA
 Clobbers Z&N, C, and V; and writes in stack 
08       PHP
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
08       PHP
28       PLP
30 FA    BMI *-4
28       PLP
 Clobbers A; and writes in stack 
A2 0B    LDX #11
F6 F6    INC $F6,X
CA       DEX
D0 FB    BNE *-3
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp, and writable $00-$FF 
08       PHP
48       PHA
A9       LDA #87
20 xx xx JSR delay_a_25_clocks
68       PLA
28       PLP
 Requires delay_a_25_clocks; and writes in stack
10 bytes 
A2 05    LDX #5 ;hides 'ORA zp'
CA       DEX ;first loop only
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
CA       DEX
D0 F7    BNE *-7
 Clobbers A, X, Z&N, and C 
A0 05    LDY #5 ;hides 'ORA zp'
88       DEY ;first loop only
A9 0A    LDA #$0A ;hides 'ASL A'
10 FD    BPL *-1
88       DEY
D0 F7    BNE *-7
 Clobbers A, Y, Z&N, and C 
A2 0B    LDX #11
EA   ... NOP      × 3
CA       DEX
D0 FA    BNE *-4
F6 xx    INC @zptemp,X
 Clobbers X, and Z&N; and requires @zptemp 
A2 09    LDX #9 ;hides 'ORA #imm'
FE B5 02 INC $02B5,X ;hides 'LDA $02,X'
A5 A5    LDA $A5
CA       DEX
D0 F7    BNE *-7
 Clobbers A, X, and Z&N; and requires writable $200-$2FF, and writable $300-$3FF 
A0 09    LDY #9 ;hides 'ORA #imm'
FE B5 02 INC $02B5,X ;hides 'LDA $02,X'
A5 A5    LDA $A5
88       DEY
D0 F7    BNE *-7
 Clobbers A, Y, and Z&N; and requires writable $200-$2FF, and writable $300-$3FF 
A2 09    LDX #9 ;hides 'ORA #imm'
FE B5 03 INC $03B5,X ;hides 'LDA $03,X'
A5 A5    LDA $A5
CA       DEX
D0 F7    BNE *-7
 Clobbers A, X, and Z&N; and requires writable $300-$3FF, and writable $400-$4FF 
A0 09    LDY #9 ;hides 'ORA #imm'
FE B5 03 INC $03B5,X ;hides 'LDA $03,X'
A5 A5    LDA $A5
88       DEY
D0 F7    BNE *-7
 Clobbers A, Y, and Z&N; and requires writable $300-$3FF, and writable $400-$4FF 
A2 09    LDX #9 ;hides 'ORA #imm'
FE B5 04 INC $04B5,X ;hides 'LDA $04,X'
A5 A5    LDA $A5
CA       DEX
D0 F7    BNE *-7
 Clobbers A, X, and Z&N; and requires writable $400-$4FF, and writable $500-$5FF 
A0 09    LDY #9 ;hides 'ORA #imm'
FE B5 04 INC $04B5,X ;hides 'LDA $04,X'
A5 A5    LDA $A5
88       DEY
D0 F7    BNE *-7
 Clobbers A, Y, and Z&N; and requires writable $400-$4FF, and writable $500-$5FF 
A2 09    LDX #9 ;hides 'ORA #imm'
FE B5 05 INC $05B5,X ;hides 'LDA $05,X'
A5 A5    LDA $A5
CA       DEX
D0 F7    BNE *-7
 Clobbers A, X, and Z&N; and requires writable $500-$5FF, and writable $600-$6FF 
A0 09    LDY #9 ;hides 'ORA #imm'
FE B5 05 INC $05B5,X ;hides 'LDA $05,X'
A5 A5    LDA $A5
88       DEY
D0 F7    BNE *-7
 Clobbers A, Y, and Z&N; and requires writable $500-$5FF, and writable $600-$6FF 
A2 09    LDX #9 ;hides 'ORA #imm'
FE B5 07 INC $07B5,X ;hides 'LDA $07,X'
A5 A5    LDA $A5
CA       DEX
D0 F7    BNE *-7
 Clobbers A, X, and Z&N; and requires writable $00-$FF, and writable $700-$7FF 
A0 09    LDY #9 ;hides 'ORA #imm'
FE B5 07 INC $07B5,X ;hides 'LDA $07,X'
A5 A5    LDA $A5
88       DEY
D0 F7    BNE *-7
 Clobbers A, Y, and Z&N; and requires writable $00-$FF, and writable $700-$7FF 
A2 09    LDX #9 ;hides 'ORA #imm'
FE B5 06 INC $06B5,X ;hides 'LDA $06,X'
A5 A5    LDA $A5
CA       DEX
D0 F7    BNE *-7
 Clobbers A, X, and Z&N; and requires writable $600-$6FF, and writable $700-$7FF 
A0 09    LDY #9 ;hides 'ORA #imm'
FE B5 06 INC $06B5,X ;hides 'LDA $06,X'
A5 A5    LDA $A5
88       DEY
D0 F7    BNE *-7
 Clobbers A, Y, and Z&N; and requires writable $600-$6FF, and writable $700-$7FF 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
20 xx xx JSR @rts15
90 FA    BCC *-4
68       PLA
 Clobbers Z&N, and C; requires @rts12, and @rts15; and writes in stack 
48       PHA
18       CLC
A9 0A    LDA #$0A ;hides 'ASL A'
EA       NOP
00 00    BRK 0
90 FA    BCC *-4
68       PLA
 Clobbers Z&N, and C; requires dummy interrupt handler; and writes in stack
11 bytes 
08       PHP
24 24    BIT $24
48       PHA
A9 E9    LDA #$E9 ;hides 'SBC #$0A'
0A       ASL A ;first loop only
D0 FC    BNE *-2
68       PLA
28       PLP
 Writes in stack 
BA       TSX
A0 09    LDY #9 ;hides 'ORA #imm'
A5 68    LDA $68 ;hides 'PLA'
A5 A5    LDA $A5
88       DEY
D0 F8    BNE *-6
9A       TXS
 Clobbers A, X, Y, and Z&N; and unsafe for interrupts
12 bytes 
A2 05    LDX #5 ;hides 'ORA zp'
AD EA EA LDA $EAEA ;hides two 'NOP's
68       PLA       \ × 2
48       PHA       /
CA       DEX
D0 F5    BNE *-9
 Clobbers A, X, and Z&N 
A0 05    LDY #5 ;hides 'ORA zp'
AD EA EA LDA $EAEA ;hides two 'NOP's
68       PLA       \ × 2
48       PHA       /
88       DEY
D0 F5    BNE *-9
 Clobbers A, Y, and Z&N 
A2 01    LDX #1
EA       NOP
A0 11    LDY #17
EA       NOP
88       DEY
D0 FC    BNE *-2
CA       DEX
D0 F6    BNE *-8
 Clobbers X, Y, and Z&N
16 bytes 
18   ... CLC      × 2
A9 0A    LDA #$0A ;hides 'ASL A'
EA   ... NOP      × 9
18       CLC
10 F3    BPL *-11
 Clobbers A, Z&N, and C
32 bytes 
68   ... PLA      × 32
 Clobbers A, S, and Z&N
64 bytes 
EA   ... NOP      × 64
 No requirements


See also

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