Talk:MMC3

There's some documentation about the differences between MMC3 revisions here: [1] I'll add them in at some point, if nobody else does. --Drag 18:00, 19 April 2011 (UTC)

PRG RAM bank behavior

When PRG RAM is accessed via $6000-$7FFF, what does the MMC3 put on the upper PRG ROM address lines? --Tepples 23:24, 20 April 2011 (UTC)

Ideally, the MMC3 wouldn't put anything on the ROM address lines. :P Either way, if the CPU is accessing $6000-7FFF, I'd imagine whatever chip is selected would see %011xxxxx xxxxxxxx on its address lines. RAM would just see the x part, and whatever mapper-supplemented upper address lines if the RAM is bankswitched.