MMC1 fixes into Dev branch - Githubissues

tsalvo / nes-emu-ios

NES Emulator for iOS / iPadOS / macOS / tvOS, written in Swift

MIT License

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MMC1 fixes into Dev branch #123

Closed tsalvo closed 1 year ago

tsalvo commented 1 year ago

Fix PRG RAM banking offset (was using 4KB banking instead of 8KB)
Fix out of bounds issues where a ROM could request a bank number that was higher than what's available on the cartridge

Holy Diver Batman 0.0.1 MMC1 ROMs are all booting with the above fixes, including a few ROMs that were booting to black screen before.

This doesn't fix some other issues reported for MMC1 (audio issues with a few games, and Qix Black screen issue)