6502 cycle times

I put this spreadsheet together because I didn't like the way the timing information was organized in other places. Some mnemonic/addressing mode combinations do not have an opcode and are marked with "x" because they are not legal instructions. I may add the illegal opcodes later. Cells marked with "+" mean add one cycle if a page boundary is crossed.

Mmmenoic

Description

IMP

IMM

ZP

ZP,X

ZP,Y

ABS

ABS,X

ABS,Y

IND

IND,X

IND,Y

ACC

ADC

ADd with Carry

x

2

3

4

x

4

4+

4+

x

6

5+

x