[Dracula X]

I'm trying to see if I can convert this to MMC5 but it looks like Mode 3 to me a little

UxROM:

Code: [Select]

CPU $8000-$BFFF: 16 KB switchable PRG ROM bank
CPU $C000-$FFFF: 16 KB PRG ROM bank, fixed to the last bank
MMC1:

Code: [Select]

CPU $6000-$7FFF: 8 KB PRG RAM bank, (optional)
CPU $8000-$BFFF: 16 KB PRG ROM bank, either switchable or fixed to the first bank
CPU $C000-$FFFF: 16 KB PRG ROM bank, either fixed to the last bank or switchable
Mapper 091:

Code: [Select]

CPU $8000-$9FFF: 8 KiB switchable PRG-ROM bank
CPU $A000-$BFFF: 8 KiB switchable PRG-ROM bank
CPU $C000-$FFFF: 16 KiB PRG-ROM bank, hard-wired to last bank
MMC3:

Code: [Select]

CPU $6000-$7FFF: 8 KB PRG RAM bank (optional)
CPU $8000-$9FFF (or $C000-$DFFF): 8 KB switchable PRG ROM bank
CPU $A000-$BFFF: 8 KB switchable PRG ROM bank
CPU $C000-$DFFF (or $8000-$9FFF): 8 KB PRG ROM bank, fixed to the second-last bank
CPU $E000-$FFFF: 8 KB PRG ROM bank, fixed to the last bank
Should I change it to mode 1 to work around it or change it to mode 3?

[Cyneprepou4uk]

If your game always swaps both banks at the same time, then you can work with either 1 or 3 mode. Otherwise mode 3 only.

Why do you post info about other mappers besides 091 and MMC5? Never include irrelevant stuff in technical questions.

[Dracula X]

1. I'll remember that next time!

2. So I won't make a mistake with the wrong choice.