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NES: Tweaked mapper 268 (Coolboy)#201

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Yave-Yu wants to merge 3 commits into
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Yave-Yu:Mapper268
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NES: Tweaked mapper 268 (Coolboy)#201
Yave-Yu wants to merge 3 commits into
nesdev-org:masterfrom
Yave-Yu:Mapper268

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@Yave-Yu

@Yave-Yu Yave-Yu commented Jun 30, 2026

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Added submapper 1 condition so it could run 112 in 1 normally.

112-in-1 (Unknown001) (Unl)_000 112-in-1 (Unknown001) (Unl)_001

@HeeminTV

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One other way to do this is to make a flag that is set when a game writes to $5xxx at least once and use that flag to ignore mapper writes to $6xxx. This kind of method was apparently used quite often in many existing clone mapper implementations in Mesen but I also think this was because they weren't NES 2.0 mappers, which implicitly contains a possibility of having no submapper number at all.

@Yave-Yu

Yave-Yu commented Jun 30, 2026

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This one I basically followed old Mesen's way.

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3 participants