The 6802 MPU board (A080-19638-D000)

Some late games carry a 6802 MPU board that looks like a -35 and runs the same ROM code with the same LED flash codes. It uses a 6802 CPU, a 5114 RAM (same 18 pin size as the 5101, four times the capacity), no 6810, one 2764 EPROM at U7 (or two 2732s at U2/U6), a 2 MHz crystal clock, a different reset circuit and extra jumpers W1-W6 near TP5.

Systems

• Bally MPU AS-2518-35

Related tips

• Testing an MPU in the game with only J4 connected
• MPU board test points
• MPU board test point voltages
• New replacement MPU boards exist
• Why the MPU has ROM jumpers
• Telling a -133 MPU from a -35 or -17
• Converting a -133 MPU to a -35
• Setting up an MPU for the test EPROM

Source: Repairing Bally Electronic Pinball Games from 1977 to 1985, Part One, Clay Harrell (pinrepair.com)