INES Mapper 191: Difference between revisions

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(Variant of 119)
(xref to other CHR RAM+CHR ROM boards)
 
(4 intermediate revisions by 3 users not shown)
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[[Category:iNES Mappers]][[Category:MMC3-like 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:
'''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]].)
* CHR RAM is 2 KiB, instead of 8 KiB like on 119. (This can be overridden with [[NES 2.0]].)
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   Apart from that, this mapper behaves exactly like your typical MMC3.  See [[INES Mapper 004|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:

  • Waixing's other MMC3-based mappers with both CHR RAM and CHR ROM- 074, 192, 194, 195
  • Waixing's VRC4-based mappers with both CHR RAM and CHR ROM- 252, 253