6532 RIOT port pins on the System 80 CPU board

Each 6532 has ports A and B of eight lines. PA0-PA7 are on pins 8 to 15. PB0-PB3 are on pins 24 to 21 and PB4-PB7 on pins 19 to 16. Pin 20 is +5 V.

Systems

• Gottlieb System 80
• Gottlieb System 80A
• Gottlieb System 80B

Related tips

• Which System 80 CPU board goes with which games
• Swap the three 6532 RIOT chips when a CPU board dies
• System 80 CPU board main chips
• System 80 and 80A CPU boards swap only with the matching U2/U3
• Reading the System 80 CPU DIP switches
• U2/U3 rules ROMs decide which system a CPU board runs
• System 80 CPU board revisions D102, D107 and D20869
• Swapping CPU boards between System 80, 80A and 80B

Source: Gottlieb System 80 Test EPROM V3.2 (February 2015), Pinitech