INES Mapper 196

iNES Mapper 196 denotes circuit boards by MCRM, who mostly made Mario-themed hacks of existing games. For copy protection purposes, the MMC3 clone's A0 input is connected to A1 or A2 instead. Additonally, one variant uses mapper 189-style PRG banking. Submappers denote the particular variant used:

• Submapper 0: Actual variant unknown; use the following heuristics:
  • MMC3's CPU A0 input =1 if (CPU A1=1 or CPU A2=1 or CPU A3=1) and CPU A0=0
  • Use normal MMC3 PRG banking until CPU 6000-7FFF is written to, after which use mapper 189-style PRG banking
• Submapper 1: MMC3 CPU A0 input=CPU A1, normal MMC3 PRG banking
• Submapper 2: MMC3 CPU A0 input=CPU A2, normal MMC3 PRG banking
• Submapper 3: MMC3 CPU A0 input=CPU A1, mapper 189-style PRG banking.