Talk:MMC1 pinout: Difference between revisions
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== Tying PA12 low == | == 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. --[[User:Tepples|Tepples]] 08:31, 12 October 2012 (MDT) | 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. --[[User:Tepples|Tepples]] 08:31, 12 October 2012 (MDT) | ||
:Given the pictures I can find ([http://kevtris.org/mappers/nes_custom/NES_EVENT.html kevtris], [http://bootgod.dyndns.org:7777/profile.php?id=4627 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. —[[User:Lidnariq|Lidnariq]] 11:41, 12 October 2012 (MDT) | |||
Revision as of 17:41, 12 October 2012
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)
