INES Mapper 177: Difference between revisions
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NewRisingSun (talk | contribs) (Created page with "Category:Mappers with CHR RAMiNES Mapper 177 is used for games from 恒格电子 (Hénggé Diànzǐ). It's basically oversize BNROM without bus conflicts, with an addi...") |
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0: Vertical | 0: Vertical | ||
1: Horizontal | 1: Horizontal | ||
Some Hengedianzi games use hard-wired mirroring and do not set the M bit correctly; they are set to [[INES Mapper 241]] instead. | |||
[[Category:Mappers with CHR RAM]] | [[Category:Mappers with CHR RAM]] | ||
Revision as of 20:06, 4 November 2018
iNES Mapper 177 is used for games from 恒格电子 (Hénggé Diànzǐ). It's basically oversize BNROM without bus conflicts, with an additional mirroring control, and with 8 KiB of battery-backed WRAM at CPU $6000-$7FFF.
7 bit 0
---------
$8000-FFFF: ..MP PPPP
|+-++++- Select 32 KiB PRG-ROM bank at CPU $8000-$FFFF
+------- Select nametable mirroring
0: Vertical
1: Horizontal
Some Hengedianzi games use hard-wired mirroring and do not set the M bit correctly; they are set to INES Mapper 241 instead.
