INES Mapper 036: Difference between revisions
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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 (also released as ''Comando de Lobos'') | * Strike Wolf (also released as ''Comando de Lobos'') | ||
* Policeman | * Policeman | ||
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This PRG behavior is confusing but seems to be complete. | This PRG behavior is confusing but seems to be complete. | ||
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. | ||
Revision as of 21:32, 1 March 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: $E103
read $4100-4103: [xxRR xxxx]
|||| ||||
||++------ Copy internal register 'RR' to data bus.
++---++++- open bus
write $4100: when M=0, copy internal register 'PP' to internal register 'RR'. When M=1, RR=RR+1
write $4101: no visible effect
write $4102: [..PP ....] - Copy data bus to internal register 'PP'. Value is not yet exposed anywhere.
write $4103: [...M ....] - PRG banking mode (0: copy, 1: increment)
write $8000-$FFFF: copy internal register 'RR' to PRG banking pins
This PRG behavior is confusing but seems to be complete.
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 all editions of these three games are 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.
