WPC-S and WPC-95 CPU boards need the matching security PIC

The security PIC is game specific. A CPU board moved to a different game must have that game's PIC fitted (U22 on WPC-S, G10 on WPC-95) along with its game ROM. Aftermarket rewritten PICs are available, are still game specific, and work with any ROM version for that game.

Systems

• WPC-Security (WPC-S)
• WPC-95

Related tips

• WPC-S and WPC-95 security PIC (G10) is game specific
• What is on the WPC CPU board
• What fails on a WPC CPU board
• Running a WPC CPU board on the bench
• WPC CPU board versions and where they fit
• Bench-check the WPC CPU switch matrix circuit
• Country DIP switch settings on WPC-S and WPC-95 CPU boards
• Which System 11 CPU boards fit which games

Source: Repairing Williams/Bally WPC Pinball Games from 1990 to 1999, Part One, Clay Harrell (pinrepair.com)