Replacing the 6802 CPU with a 6808
System 6 and 7 boards take a 6802 or a 6808 CPU. The 6802 has built-in RAM and is the better choice, but either works. System 3/4 boards need the 6800 (or the faster 68B00).
Systems
Related tips
- CPU chip types: 6800 on System 3/4, 6802 or 6808 on System 6/7
- System 6/7 CPU: no clock at the 6802/6808
- Identifying a System 3 to 7 CPU board
- What changed on the System 6A CPU board
- System 6 CPU board test points
- System 7 CPU board test points
- System 6 CPU board jumpers J1 to J6
- A System 7 CPU board can run any System 3 to 7 game
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part One, Clay Harrell (pinrepair.com)