MMC2 Chip: (40/42 pin shrink-DIP)
Later revisions of the chip are labelled MMC2-L and are 42 pin instead of 40 pin.
.--\/--.
GND - |XX XX| - +5V
(n) M2 -> |01 40| - +5V
(n) CPU A14 -> |02 39| - GND
(n) CPU A13 -> |03 38| -> CIRAM A10 (n)
(r) PRG A15 <- |04 37| -> CHR A15 (r)
(r) PRG A14 <- |05 36| -> CHR A12 (r)
(rn) CPU A12 -> |06 35| -> CHR A14 (r)
(r) PRG A13 <- |07 34| <- PPU A12 (n)
(r) PRG A16 <- |08 33| -> CHR A13 (r)
(r) PRG /CE <- |09 32| -> CHR A16 (r)
(rn) CPU D4 -> |10 31| <- PPU A8 (rn)
(rn) CPU D3 -> |11 30| <- PPU A5 (rn)
(rn) CPU D0 -> |12 29| <- PPU A9 (rn)
(rn) CPU D1 -> |13 28| <- PPU A4 (rn)
(rn) CPU D2 -> |14 27| <- PPU A11 (rn)
(n) CPU R/W -> |15 26| <- PPU A3 (rn)
(n) /ROMSEL -> |16 25| <- PPU A7 (rn)
(rn) PPU /RD -> |17 24| <- PPU A2 (rn)
(rn) PPU A0 -> |18 23| <- PPU A10 (rn)
(rn) PPU A6 -> |19 22| <- PPU A1 (rn)
GND - |20 21| <- PPU A13 (rn)
`------'
(r) - this pin connects to the ROM chips
(n) - this pin connects to the NES connector
Categories: Pinouts