I have a few MMC1 questions, perhaps someone can help me.
1) Mirroring. It's bothering me. Zelda2 never seems to change mirroring in my emulator even if the gamemode changing from horizontal to vertical scrolling. Other emulators seems to have good behaviour but I'm probably missing something. The controlregister1 always seems to contain the value $0F (=horizontal mirroring) for me.
Are there any special ways MMC1 games changes the mirroring bits? Perhaps they're reset during special conditions? Anyway, can't find any documentation on any odd behaviour..
2) Assuming cart has VROM, which banks are mapped in to the PPUMemory during powerup?
Thanks alot in advance
1) Mirroring. It's bothering me. Zelda2 never seems to change mirroring in my emulator even if the gamemode changing from horizontal to vertical scrolling. Other emulators seems to have good behaviour but I'm probably missing something. The controlregister1 always seems to contain the value $0F (=horizontal mirroring) for me.
Are there any special ways MMC1 games changes the mirroring bits? Perhaps they're reset during special conditions? Anyway, can't find any documentation on any odd behaviour..
2) Assuming cart has VROM, which banks are mapped in to the PPUMemory during powerup?
Thanks alot in advance