INES Mapper 215: Difference between revisions

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[[Category:INES Mappers|215]][[Category:MMC3-like mappers|215]][[Category:Mappers using $4020-$5FFF|215]]
[[Category:INES Mappers|215]][[Category:MMC3-like mappers|215]][[Category:Mappers using $4020-$5FFF|215]][[Category:Mappers with scanline IRQs|215]][[Category:NES 2.0 mappers with submappers|215]]
[[iNES Mapper 215]] is one of the MMC3 variants mapper, which is mainly used in the ''Super Game'' of pirate games.
iNES Mapper 215 is used for later single-game as well as multicart releases from Sugar Softec. They use an MMC3 clone with a selectable scrambling pattern.


Source codes from Nestopia:
* '''Submapper 0''', UNIF board name '''UNL-8237''':
* [https://github.com/rdanbrook/nestopia/blob/master/source/core/board/NstBoardSuperGameBoogerman.cpp Nestopia implementation (Boogerman)]
** ''Earthworm Jim 2''
* [https://github.com/rdanbrook/nestopia/blob/master/source/core/board/NstBoardSuperGameLionKing.cpp Nestopia implementation (The Lion King)]
** ''Mortal Kombat 3'' (SuperGame, not ''Extra 60'', not to be confused by similarly-named games from other developers)
* [https://github.com/rdanbrook/nestopia/blob/master/source/core/board/NstBoardSuperGamePocahontas2.cpp Nestopia implementation (Pocahontas 2)]
** ''Mortal Kombat 3 Extra 60'' (both existing ROM images are just extracts of the 2-in-1 multicart containing this game)
** ''Pocahontas Part 2''
** ''2-in-1: Aladdin, EarthWorm Jim 2'' (Super 808)
** ''2-in-1: The Lion King, Bomber Boy'' (GD-103)
** ''2-in-1 Super Golden Card: EarthWorm Jim 2, Boogerman'' (king002)
** ''2-in-1: Mortal Kombat 3 Extra 60, The Super Shinobi'' (king005)
** ''3-in-1: Boogerman, Adventure Island 3, Double Dragon 3'' (Super 308)
** ''5-in-1 Golden Card: Aladdin, EarthWorm Jim 2, Garo Densetsu Special, Silkworm, Contra Force'' (SPC005)
** ''6-in-1 Golden Card: EarthWorm Jim 2, Mortal Kombat 3, Double Dragon 3, Contra 3, The Jungle Book, Turtles Tournament Fighters'' (SPC009)
* '''Submapper 1''', UNIF board name '''UNL-8237A''':
** ''9-in-1 High Standard Card: The Lion King, EarthWorm Jim 2, Aladdin, Boogerman, Somari, Turtles Tournament Fighters, Mortal Kombat 3, Captain Tsubasa 2, Taito Basketball'' (king001)
=Registers=
==NROM Override/Mode Register ($5000)==
Mask: $F007
D~7654 3210
  ---------
  MCS. BBBb
  |||  ++++- Select 16 KiB PRG-ROM bank at CPU
  |||        $8000-$BFFF and $C000-$FFFF
  ||+------- 0: Do not replace bit 0 (NROM-128)
  ||        1: Replace bit 0 with CPU A14 (NROM-256)
  |+-------- 0: Do not replace PRG A17 and CHR A17 from the MMC3 (256 KiB outer bank)
  |          1: Replace PRG A17 and CHR A17 with $5001 bits 4 and 5, respectively (128 KiB outer bank)
  +--------- 0: Use PRG bank from MMC3; ignore bits 0-3/5
              1: Ignore PRG bank from MMC3; apply bits 0-3/5
Power-up value: $00
 
==Outer Bank Register ($5001) - Submapper 0 (UNL-8237)==
Mask: $F007
D~7654 3210
  ---------
  ..cp CCPP
    || ||++- Select 256 KiB Outer PRG-ROM bank (PRG A18/A19)
    || ++--- Select 256 KiB Outer CHR-ROM bank (CHR A18/A19)
    |+------ Select 128 KiB Outer PRG-ROM bank (PRG A17) if $5000 bit 6=1
    +------- Select 128 KiB Outer CHR-ROM bank (CHR A17) if $5000 bit 6=1
Power-up value: $xF
 
==Outer Bank Register ($5001) - Submapper 1 (UNL-8237A)==
Mask: $F007
D~7654 3210
  ---------
  ..cp P.PP
        CCC.
    || +|++- Select 256 KiB Outer PRG-ROM bank (PRG A18-A20)
    || +++-- Select 256 KiB Outer CHR-ROM bank (CHR A18-A20)
    |+------ Select 128 KiB Outer PRG-ROM bank (PRG A17) if $5000 bit 6=1
    +------- Select 128 KiB Outer CHR-ROM bank (CHR A17) if $5000 bit 6=1
Power-up value: $xF
 
==Scrambling Pattern Register ($5007)==
Mask: $F007
D~7654 3210
  ---------
  .... .MMM
        +++- Select MMC3 register address and index scrambling mode (0-7)
Power-up value: $00
 
==MMC3-compatible registers ($8000-$FFFF, write-only)==
The scrambled addresses correspond to the real address as follows:
$5007 -------------address written-----------
value 8000 8001 A000 A001 C000 C001 E000 E001
-----------------------------------------------
0 8000 8001 A000 A001 C000 C001 E000 E001
1 A001 A000 8000 C000 8001 C001 E000 E001
2 8000 8001 A000 A001 C000 C001 E000 E001
3 C001 8000 8001 A000 A001 E001 E000 C000
4 A001 8001 8000 C000 A000 C001 E000 E001
5 8000 8001 A000 A001 C000 C001 E000 E001
6 8000 8001 A000 A001 C000 C001 E000 E001
7 8000 8001 A000 A001 C000 C001 E000 E001
 
The data that is written to the low three bits of register $8000 corresponds to the real data as follows:
$5007 -value written-
value 0 1 2 3 4 5 6 7
-----------------------
0 0 1 2 3 4 5 6 7
1 0 2 6 1 7 3 4 5
2 0 5 4 1 7 2 6 3
3 0 6 3 7 5 2 4 1
4 0 2 5 3 6 1 7 4
5 0 1 2 3 4 5 6 7
6 0 1 2 3 4 5 6 7
7 0 1 2 3 4 5 6 7
 
Bits 6 and 7 of register $8000 are kept as they are. The data written to $8001 and $A000-$FFFF is never scrambled. After unscrambling the address and the data written, these registers function the same as the MMC3's
 
=Note=
* Several single-game cartridges that use this mapper are actually 2-in-1 multicarts that have PRG A18 forced to 0 or 1 via solder pad. A dump from these cartridges without changing the solder pad will therefore contain 256 KiB of PRG-ROM but 512 KiB of CHR-ROM, since CHR A18 is not forced in a similar fashion, with one 256 KiB half containing data from the other inaccessible game.
* The Outer Bank Register is reset to its power-up value if a Reset has been detected via an interruption of the M2 signal. This makes it difficult to dump these cartridges using a Kazzo device.
* ''Boogerman'' ([[INES Mapper 114]] Submapper 1) was originally assigned by CaH4e3 to Mapper 215; he later reassigned '''UNL-8237''' to Mapper 215 instead.
* Some multicarts may have alternative outer bank registers in the $6xxx range; since they all contain compatibility code that writes to the $5xxx range, they are assigned to Mapper 215 as well.
 
=Similar Mappers=
* [[NES 2.0 Mapper 258]] adds readable protection registers in the $5000-$5007 range.

Latest revision as of 21:16, 8 June 2019

iNES Mapper 215 is used for later single-game as well as multicart releases from Sugar Softec. They use an MMC3 clone with a selectable scrambling pattern.

  • Submapper 0, UNIF board name UNL-8237:
    • Earthworm Jim 2
    • Mortal Kombat 3 (SuperGame, not Extra 60, not to be confused by similarly-named games from other developers)
    • Mortal Kombat 3 Extra 60 (both existing ROM images are just extracts of the 2-in-1 multicart containing this game)
    • Pocahontas Part 2
    • 2-in-1: Aladdin, EarthWorm Jim 2 (Super 808)
    • 2-in-1: The Lion King, Bomber Boy (GD-103)
    • 2-in-1 Super Golden Card: EarthWorm Jim 2, Boogerman (king002)
    • 2-in-1: Mortal Kombat 3 Extra 60, The Super Shinobi (king005)
    • 3-in-1: Boogerman, Adventure Island 3, Double Dragon 3 (Super 308)
    • 5-in-1 Golden Card: Aladdin, EarthWorm Jim 2, Garo Densetsu Special, Silkworm, Contra Force (SPC005)
    • 6-in-1 Golden Card: EarthWorm Jim 2, Mortal Kombat 3, Double Dragon 3, Contra 3, The Jungle Book, Turtles Tournament Fighters (SPC009)
  • Submapper 1, UNIF board name UNL-8237A:
    • 9-in-1 High Standard Card: The Lion King, EarthWorm Jim 2, Aladdin, Boogerman, Somari, Turtles Tournament Fighters, Mortal Kombat 3, Captain Tsubasa 2, Taito Basketball (king001)

Registers

NROM Override/Mode Register ($5000)

Mask: $F007

D~7654 3210
  ---------
  MCS. BBBb
  |||  ++++- Select 16 KiB PRG-ROM bank at CPU
  |||        $8000-$BFFF and $C000-$FFFF
  ||+------- 0: Do not replace bit 0 (NROM-128)
  ||         1: Replace bit 0 with CPU A14 (NROM-256)
  |+-------- 0: Do not replace PRG A17 and CHR A17 from the MMC3 (256 KiB outer bank)
  |          1: Replace PRG A17 and CHR A17 with $5001 bits 4 and 5, respectively (128 KiB outer bank)
  +--------- 0: Use PRG bank from MMC3; ignore bits 0-3/5
             1: Ignore PRG bank from MMC3; apply bits 0-3/5

Power-up value: $00

Outer Bank Register ($5001) - Submapper 0 (UNL-8237)

Mask: $F007

D~7654 3210
  ---------
  ..cp CCPP
    || ||++- Select 256 KiB Outer PRG-ROM bank (PRG A18/A19)
    || ++--- Select 256 KiB Outer CHR-ROM bank (CHR A18/A19)
    |+------ Select 128 KiB Outer PRG-ROM bank (PRG A17) if $5000 bit 6=1
    +------- Select 128 KiB Outer CHR-ROM bank (CHR A17) if $5000 bit 6=1

Power-up value: $xF

Outer Bank Register ($5001) - Submapper 1 (UNL-8237A)

Mask: $F007

D~7654 3210
  ---------
  ..cp P.PP
       CCC.
    || +|++- Select 256 KiB Outer PRG-ROM bank (PRG A18-A20)
    || +++-- Select 256 KiB Outer CHR-ROM bank (CHR A18-A20)
    |+------ Select 128 KiB Outer PRG-ROM bank (PRG A17) if $5000 bit 6=1
    +------- Select 128 KiB Outer CHR-ROM bank (CHR A17) if $5000 bit 6=1

Power-up value: $xF

Scrambling Pattern Register ($5007)

Mask: $F007

D~7654 3210
  ---------
  .... .MMM
        +++- Select MMC3 register address and index scrambling mode (0-7)

Power-up value: $00

MMC3-compatible registers ($8000-$FFFF, write-only)

The scrambled addresses correspond to the real address as follows:

$5007	-------------address written-----------
value	8000 8001 A000 A001 C000 C001 E000 E001
-----------------------------------------------	
0	8000 8001 A000 A001 C000 C001 E000 E001
1	A001 A000 8000 C000 8001 C001 E000 E001
2	8000 8001 A000 A001 C000 C001 E000 E001
3	C001 8000 8001 A000 A001 E001 E000 C000
4	A001 8001 8000 C000 A000 C001 E000 E001
5	8000 8001 A000 A001 C000 C001 E000 E001
6	8000 8001 A000 A001 C000 C001 E000 E001
7	8000 8001 A000 A001 C000 C001 E000 E001

The data that is written to the low three bits of register $8000 corresponds to the real data as follows:

$5007	-value written-
value	0 1 2 3 4 5 6 7
-----------------------
0	0 1 2 3 4 5 6 7
1	0 2 6 1 7 3 4 5
2	0 5 4 1 7 2 6 3
3	0 6 3 7 5 2 4 1
4	0 2 5 3 6 1 7 4
5	0 1 2 3 4 5 6 7
6	0 1 2 3 4 5 6 7
7	0 1 2 3 4 5 6 7 

Bits 6 and 7 of register $8000 are kept as they are. The data written to $8001 and $A000-$FFFF is never scrambled. After unscrambling the address and the data written, these registers function the same as the MMC3's

Note

  • Several single-game cartridges that use this mapper are actually 2-in-1 multicarts that have PRG A18 forced to 0 or 1 via solder pad. A dump from these cartridges without changing the solder pad will therefore contain 256 KiB of PRG-ROM but 512 KiB of CHR-ROM, since CHR A18 is not forced in a similar fashion, with one 256 KiB half containing data from the other inaccessible game.
  • The Outer Bank Register is reset to its power-up value if a Reset has been detected via an interruption of the M2 signal. This makes it difficult to dump these cartridges using a Kazzo device.
  • Boogerman (INES Mapper 114 Submapper 1) was originally assigned by CaH4e3 to Mapper 215; he later reassigned UNL-8237 to Mapper 215 instead.
  • Some multicarts may have alternative outer bank registers in the $6xxx range; since they all contain compatibility code that writes to the $5xxx range, they are assigned to Mapper 215 as well.

Similar Mappers