WPC-S and WPC-95 security PIC (G10) is game specific

WPC-S and WPC-95 CPU boards have a security PIC chip at G10, wired into the switch matrix, and each game needs its own PIC; a chip from one title won't run another. Replacements are available for each title. Code-modified game ROMs exist that ignore the PIC, letting any PIC be used.

Systems

• WPC-Security (WPC-S)
• WPC-95

Related tips

• WPC-S and WPC-95 CPU boards need the matching security PIC
• What is on the WPC CPU board
• What the WPC custom chip does
• 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

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