Talk:MMC1 pinout

Tying PA12 low

Based on the description of NES-EVENT (#105), it appears to tie the MMC1's PA12 input low and connect the cart's PA12 to A12 of the CHR RAM. --Tepples 08:31, 12 October 2012 (MDT)

Given the pictures I can find (kevtris, kevtris-via-bootgod; both are component side only), it looks like the PA12 input is likely still connected to the cartridge edge. I can't tell anything about whether MMC1 CHR A12 OUT goes to CHR RAM A12. And when I load NWC in FCEUX and trap all mapper writes, it looks like the game just uses 8KB mode anyway. —Lidnariq 11:41, 12 October 2012 (MDT)

SNROM, etc... loses CHR banking ?

I'm pretty sure they don't, they just bank only 8k as they were always supposed to, and it's possible to have two banks of 4k and bankswitch them independently. I might be wrong, I'll have to double check. Bregalad (talk) 04:26, 15 May 2014 (MDT)