INES Mapper 196
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INES Mapper 196 is a pirate variant of the MMC3 used in Super Mario Bros. 17; a pirate hack of Chip 'n' Dale's Rescue Rangers.
Nestopia's source says that it is identical to an "ordinary" MMC3, except that it distinguishes between registers based on A2, not A0, and corresponds to the two games Super Mario Bros. 11 (Unl) [!] and Super Mario Bros Jurassk Park (Unl) [!].
FCEUX's source implies there's far too many different variants that have been assigned to this mapper, using A1, A2, or A3; and additionally that writing to $6000-$7FFF switches the board into a BNROM-like mirroring layout.
