NES Game Genie IC pinout
See also: Game Genie
.---\/---.
CC PRG /CE <- | 01 48 | <- PPU A13 on NES
Genie ROM /CE <- | 02 47 | -> CHR A13 on CC
/ROMSEL -> | 03 46 | <- PPU /RD
CPU R/W -> | 04 45 | <- PPU A2
CPU A0 -> | 05 44 | <- PPU A4
CPU A1 -> | 06 43 | <- PPU A5
CPU A2 -> | 07 42 | <- PPU A6
CPU A3 -> | 08 41 | <- PPU A7
CPU A4 -> | 09 40 | <> CPU D0
CPU A5 -> | 10 39 | <> CPU D1
CPU A6 -> | 11 38 | <> CPU D2
GND -- | 12 37 | <> CPU D3
CPU A7 -> | 13 36 | -- +5V
CPU A8 -> | 14 35 | <> CPU D4
CPU A9 -> | 15 34 | <> CPU D5
CPU A10 -> | 16 33 | <> CPU D6
CPU A11 -> | 17 32 | <> CPU D7
CPU A12 -> | 18 31 | -> PPU D7
CPU A13 -> | 19 30 | ?? NC
CPU A14 -> | 20 29 | -> PPU D6
/RESET -- | 21 28 | -> PPU D5
NC ?? | 22 27 | -> PPU D4
PPU D0 <- | 23 26 | -> PPU D3
PPU D1 <- | 24 25 | -> PPU D2
'--------'
Pins 31–35 and 37–40 are connected to the CPU Dx lines via 200-ohm resistors. Their function is to prevent a bus conflict.
CC M2 is pulled low by resistor-diode logic when Genie ROM /CE is low.
/RESET only detects power-on reset, not reset-button reset.
Pin 30 goes to an unpopulated location for a capacitor.