INES Mapper 036: Difference between revisions
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(sat down with the cartridge and a cart-swap and did my best to figure out what's going on) |
(use same register names as I've used on the pinout. no functional changes.) |
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| (9 intermediate revisions by the same user not shown) | |||
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[[Category:iNES Mappers|036]][[Category:GNROM-like mappers|036]] | [[Category:iNES Mappers|036]][[Category:GNROM-like mappers|036]] | ||
[[iNES Mapper 036]] is assigned to TXC's PCB '''01-22000-400''', featuring a [[74138]], a 74175, and usually a 24-pin ASIC labeled | [[iNES Mapper 036]] is assigned to TXC's PCB '''01-22000-400''', featuring a [[74138]], a 74175, and usually a 24-pin ASIC labeled [[TXC 05-00002-010 pinout|05-00002-010]]. [http://glukvideo.info/listado-juegos-gluk Two games] are currently known to require this definition. | ||
* Strike Wolf | * Strike Wolf (also released as ''Comando de Lobos'') | ||
* Policeman | * Policeman | ||
| Line 11: | Line 11: | ||
The PRG banking is part of the ASIC: | The PRG banking is part of the ASIC: | ||
Mask: $E100 | |||
read $4100: [xxRR xxxx] | |||
|||| |||| | |||
||++------ Copy internal register 'RR' to data bus. | |||
++---++++- open bus | |||
Mask: $E103 | Mask: $E103 | ||
write $4100: If Increment is set, internal register 'RR' <- 'RR'+1 | |||
Otherwise, if Invert is clear, copy internal register 'PP' to 'RR' | |||
if Invert is set, copy '~PP' to 'RR' | |||
write $4101: [...V ....] - Invert Mode | |||
write $4102: [..PP ....] - Copy data bus to internal register 'PP'. Value is not yet exposed anywhere. | |||
write $4101: | write $4103: [...C ....] - Increment Mode | ||
write $4102: [..PP ....] - | Mask: $8000 | ||
write $4103: [... | write $8000: copy internal register 'RR' to PRG banking pins | ||
write $8000 | |||
Three additional games published by Gluk use the same PCB, with no ASIC. They were also released in other regions on different hardware, and ''only'' Gluk's editions are compatible with the above-mentioned CHR banking. | Three additional games published by Gluk use the same PCB, with no ASIC. They were also released in other regions on different hardware, and ''only'' Gluk's editions are compatible with the above-mentioned CHR banking. | ||
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* Volley ball | * Volley ball | ||
* Puzzle | * Puzzle | ||
Compatibility code left in means that | Compatibility code left in means that Gluk's editions of these three games are also emulatable as [[NINA-003-006|NINA-06]]. | ||
See also: | See also: | ||
* http://forums.nesdev.org/viewtopic.php?p=167180#p167180 Thread about dumping Policeman starts here | * http://forums.nesdev.org/viewtopic.php?p=167180#p167180 Thread about dumping Policeman starts here | ||
* The same ASIC showed up in [[iNES Mapper 132]] and [[iNES Mapper 173]], wired differently. | |||
Latest revision as of 19:51, 6 September 2018
iNES Mapper 036 is assigned to TXC's PCB 01-22000-400, featuring a 74138, a 74175, and usually a 24-pin ASIC labeled 05-00002-010. Two games are currently known to require this definition.
- Strike Wolf (also released as Comando de Lobos)
- Policeman
Even though these games can evidently be emulated as a weird kind of GNROM, the hardware does something quite different:
The CHR banking is definitely implemented using the two 7400-series ICs:
Mask: $E200 write $4200: [.... CCCC] - Select 8 KiB CHR bank
The PRG banking is part of the ASIC:
Mask: $E100
read $4100: [xxRR xxxx]
|||| ||||
||++------ Copy internal register 'RR' to data bus.
++---++++- open bus
Mask: $E103
write $4100: If Increment is set, internal register 'RR' <- 'RR'+1
Otherwise, if Invert is clear, copy internal register 'PP' to 'RR'
if Invert is set, copy '~PP' to 'RR'
write $4101: [...V ....] - Invert Mode
write $4102: [..PP ....] - Copy data bus to internal register 'PP'. Value is not yet exposed anywhere.
write $4103: [...C ....] - Increment Mode
Mask: $8000
write $8000: copy internal register 'RR' to PRG banking pins
Three additional games published by Gluk use the same PCB, with no ASIC. They were also released in other regions on different hardware, and only Gluk's editions are compatible with the above-mentioned CHR banking.
- F-15 City War
- Volley ball
- Puzzle
Compatibility code left in means that Gluk's editions of these three games are also emulatable as NINA-06.
See also:
- http://forums.nesdev.org/viewtopic.php?p=167180#p167180 Thread about dumping Policeman starts here
- The same ASIC showed up in iNES Mapper 132 and iNES Mapper 173, wired differently.
