Talk:INES Mapper 195: Difference between revisions
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"A NES 2.0-compliant image and emulator will treat mappers 194 and 195 the same; they both specify CHR-RAM pages start at 0 and contain no mirrors." <-- That's only true for the commonly-available ROMs, which are hacked. The unhacked images of the Chinese Waixing editions of Columbus and Captain Tsubasa II do expect CHR-RAM pages $00-$03 to be mirrored at $28-$2B. [[User:NewRisingSun|NewRisingSun]] ([[User talk:NewRisingSun|talk]]) 15:16, 3 March 2018 (MST) | "A NES 2.0-compliant image and emulator will treat mappers 194 and 195 the same; they both specify CHR-RAM pages start at 0 and contain no mirrors." <-- That's only true for the commonly-available ROMs, which are hacked. The unhacked images of the Chinese Waixing editions of Columbus and Captain Tsubasa II do expect CHR-RAM pages $00-$03 to be mirrored at $28-$2B. [[User:NewRisingSun|NewRisingSun]] ([[User talk:NewRisingSun|talk]]) 15:16, 3 March 2018 (MST) | ||
: What on earth is up with that memory map? —[[User:Lidnariq|Lidnariq]] ([[User talk:Lidnariq|talk]]) 15:19, 3 March 2018 (MST) | : What on earth is up with that memory map? —[[User:Lidnariq|Lidnariq]] ([[User talk:Lidnariq|talk]]) 15:19, 3 March 2018 (MST) | ||
:: Oh, and the $28-$2B mirror is only CHR-RAM when assigned to PPU $0000-$0FFF, not to PPU $1000-$1FFF. Also, the game specifically checks that this region is CHR-RAM by reading $2007 and halting when it's not. I think this should could as another lame attempt at protection. [[User:NewRisingSun|NewRisingSun]] ([[User talk:NewRisingSun|talk]]) 15:45, 3 March 2018 (MST) | :: Oh, and in Captain Tsubasa 2, the $28-$2B mirror is only CHR-RAM when assigned to PPU $0000-$0FFF, not to PPU $1000-$1FFF. Also, the game specifically checks that this region is CHR-RAM by reading $2007 and halting when it's not. I think this should could as another lame attempt at protection. [[User:NewRisingSun|NewRisingSun]] ([[User talk:NewRisingSun|talk]]) 15:45, 3 March 2018 (MST) | ||
::: Do we have any pictures of the PCBs of any of the various Waixing MMC3 CHR RAM+ROM games? Are they all chip-on-board? —[[User:Lidnariq|Lidnariq]] ([[User talk:Lidnariq|talk]]) 17:15, 3 March 2018 (MST) | |||
:::: Not yet, but I agree they should be obtained. I would assume one common board with a place for a game-specific PAL that assigns specific CHR addresses to CHR-RAM. [[User:NewRisingSun|NewRisingSun]] ([[User talk:NewRisingSun|talk]]) 23:50, 3 March 2018 (MST) | |||
Latest revision as of 06:50, 4 March 2018
"A NES 2.0-compliant image and emulator will treat mappers 194 and 195 the same; they both specify CHR-RAM pages start at 0 and contain no mirrors." <-- That's only true for the commonly-available ROMs, which are hacked. The unhacked images of the Chinese Waixing editions of Columbus and Captain Tsubasa II do expect CHR-RAM pages $00-$03 to be mirrored at $28-$2B. NewRisingSun (talk) 15:16, 3 March 2018 (MST)
- What on earth is up with that memory map? —Lidnariq (talk) 15:19, 3 March 2018 (MST)
- Oh, and in Captain Tsubasa 2, the $28-$2B mirror is only CHR-RAM when assigned to PPU $0000-$0FFF, not to PPU $1000-$1FFF. Also, the game specifically checks that this region is CHR-RAM by reading $2007 and halting when it's not. I think this should could as another lame attempt at protection. NewRisingSun (talk) 15:45, 3 March 2018 (MST)
- Do we have any pictures of the PCBs of any of the various Waixing MMC3 CHR RAM+ROM games? Are they all chip-on-board? —Lidnariq (talk) 17:15, 3 March 2018 (MST)
- Not yet, but I agree they should be obtained. I would assume one common board with a place for a game-specific PAL that assigns specific CHR addresses to CHR-RAM. NewRisingSun (talk) 23:50, 3 March 2018 (MST)
- Do we have any pictures of the PCBs of any of the various Waixing MMC3 CHR RAM+ROM games? Are they all chip-on-board? —Lidnariq (talk) 17:15, 3 March 2018 (MST)
- Oh, and in Captain Tsubasa 2, the $28-$2B mirror is only CHR-RAM when assigned to PPU $0000-$0FFF, not to PPU $1000-$1FFF. Also, the game specifically checks that this region is CHR-RAM by reading $2007 and halting when it's not. I think this should could as another lame attempt at protection. NewRisingSun (talk) 15:45, 3 March 2018 (MST)
