Firepower CPU ROM configuration and jumpers
Firepower uses 512-byte PROMs at IC21, IC22 and IC26 and a 2716 at IC14 together, which needs CPU jumper J4 installed and J3 removed. A board modification lets it run from one 2732 at IC14 plus the two flipper EPROMs instead.
Systems
Games
Related tips
- Installing a single-EPROM adapter in the CPU socket
- Firepower original ROM layout and jumpers
- Reading the software ID in audit 00
- System 6 CPU board jumpers J1 to J6
- Run Firepower on a System 7 CPU board
- Putting all CPU ROMs in one 2764 so any board fits any game
- Undo the Firepower 2732 change on a System 6 CPU board
- LEDs flicker then stay on: flipper or game ROM problem
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part One, Clay Harrell (pinrepair.com)