INES Mapper 191: Difference between revisions
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(Created page with "Category:iNES Mappers Here are Disch's original notes: ======================== = Mapper 191 = ======================== aka: -------------------…") |
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[[Category:iNES Mappers]] | {{DEFAULTSORT:191}}[[Category:iNES Mappers]][[Category:MMC3 with CHR ROM and CHR RAM]][[Category:Mappers with scanline IRQs]] | ||
'''iNES Mapper 191''' designates a board containing an MMC3 clone. It operates identically to [[iNES Mapper 119]] with two differences: | |||
* CHR RAM is 2 KiB, instead of 8 KiB like on 119. (This can be overridden with [[NES 2.0]].) | |||
* Bit 7 of the CHR bank number (A17) switches between CHR ROM and CHR RAM, instead of bit 6 (A16) like on 119. | |||
Here are Disch's original notes: | Here are Disch's original notes: | ||
======================== | ======================== | ||
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Notes: | Notes: | ||
-------------------------- | -------------------------- | ||
This mapper is a modified MMC3 (or is based on MMC3?). | This mapper is a modified [[MMC3]] (or is based on MMC3?). | ||
In addition to any CHR-ROM present, there is also an additional 2k of CHR-RAM which is selectable. Bit 7 of | In addition to any CHR-ROM present, there is also an additional 2k of CHR-RAM which is selectable. Bit 7 of | ||
each CHR reg selects RAM or ROM (1=RAM, 0=ROM) | each CHR reg selects RAM or ROM (1=RAM, 0=ROM) | ||
Apart from that, this mapper behaves exactly like your typical MMC3. See mapper 004 for details. | Apart from that, this mapper behaves exactly like your typical MMC3. See [[INES Mapper 004|mapper 004]] for details. | ||
See also: | |||
* Waixing's other MMC3-based mappers with both CHR RAM and CHR ROM- {{mapper|74}}, {{mapper|192}}, {{mapper|194}}, {{mapper|195}} | |||
* Waixing's VRC4-based mappers with both CHR RAM and CHR ROM- {{mapper|252}}, {{mapper|253}} | |||
Latest revision as of 23:53, 26 February 2018
iNES Mapper 191 designates a board containing an MMC3 clone. It operates identically to iNES Mapper 119 with two differences:
- CHR RAM is 2 KiB, instead of 8 KiB like on 119. (This can be overridden with NES 2.0.)
- Bit 7 of the CHR bank number (A17) switches between CHR ROM and CHR RAM, instead of bit 6 (A16) like on 119.
Here are Disch's original notes: ======================== = Mapper 191 = ======================== aka: -------------------------- Pirate MMC3 variant Example Game: -------------------------- Sugoro Quest - Dice no Senshitachi (As) Notes: -------------------------- This mapper is a modified MMC3 (or is based on MMC3?). In addition to any CHR-ROM present, there is also an additional 2k of CHR-RAM which is selectable. Bit 7 of each CHR reg selects RAM or ROM (1=RAM, 0=ROM) Apart from that, this mapper behaves exactly like your typical MMC3. See mapper 004 for details.
See also:
