System 7 CPU jumpers differ for Hyperball, Defender and Star Light
All System 7 games share one set of CPU ROM jumpers and ROM sizes except Hyperball, Defender and Star Light. Moving a CPU board between one of those three and any other System 7 game means changing jumpers and fitting that game's EPROMs.
Systems
Games
Related tips
- Re-jumper a System 7 CPU from Defender/Hyperball/Star Light to a standard game
- System 7 CPU ROM sockets
- System 7 CPU jumpers that are the same on every game
- CPU LEDs flash once, then come back on and stay on
- Identifying a System 3 to 7 CPU board
- System 7 CPU board test points
- A System 7 CPU board can run any System 3 to 7 game
- Run a System 6/7 CPU board on +5 V only
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part Two, Clay Harrell (pinrepair.com)