74LS00 quad NAND gate
1+2 - '02-4 3 - EPROM A12 4 - '02-10 5 - '02-13 6 - '00-9+10 7 - ground 8 - '00-12 9+10 - '00-6 11 - '174-1 12 - '00-8 13 - diode AND of ROMC3 (3853 pin 38) and WRITE (3853 pin 3) 14 - +5v
74LS02 quad NOR gate
1 - '174-9 2 - _RAMWRITE (cart 74LS03 pin 1) 3 - $30xx (cart 74LS156 pin 5) and tied high w/2.2K resistor 4 - '00-1+2 5 - cart A12 6 - '174-15 7 - ground 8 - ROMC0 9 - ROMC1 10 - '00-4 11 - ROMC2 12 - ROMC4 13 - '00-5 14 - +5V
74LS174 hex D flip flop
1 - '00-11 2 - EPROM A13 3 - D0 4 - D1 5 - EPROM A14 6 - D2 7 - EPROM A15 8 - ground 9 - '02-1 10 - EPROM A16 11 - D3 12 - EPROM A17 13 - D4 14 - D5 15 - '02-6 16 - +5V