9332 masked ROMs can be replaced by 2532 EPROMs as-is

Later Bally games with black 9332 masked ROMs can take 2532 EPROMs with no jumper changes; these are the only masked ROM and EPROM types that share jumper settings.

Systems

• Bally MPU AS-2518-17
• Bally MPU AS-2518-35

Related tips

• A 2532 EPROM drops straight into a 9332 ROM position
• Leon's test EPROM: what to burn and where it goes
• System 7: the 2532 goes in IC17, the 2716 in IC20
• Masked ROM numbers: keep the set matched
• Garbled or partial sounds from bad ROMs or sockets
• After the test EPROM: refit the game ROM and count flashes
• ROM and EPROM types used on Bally MPUs
• Old black masked ROMs fail from tarnished legs

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