2732 EPROM

2732 EPROM
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2732 EPROM
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2732 EPROMs in various manufacturers refurbished that have been machine cleaned and legs straightened, and programmer verified blanked and erased so they are completely ready to program. Widely used in 1980s arcade game boards and pinball machines to store game code, graphics, and sound.

The 2732 EPROM is one of the most iconic memory chips of the early-to-mid 1980s. It was the standard memory choice during the "Golden Age" of arcade games and the birth of solid-state pinball.

Because many original factory ROMs (like the 9316 and 9332) are now obsolete, the 2732 serves as the primary modern replacement chip for dozens of machines.


Arcade Machines

In arcade cabinets, the 2732 was heavily utilized by industry giants like Atari, Namco/Midway, and Nintendo to store core CPU code, vector graphics, and primitive audio data.

  • Atari Vector Games: Famous vector-display games relied extensively on these chips.
    • Battlezone (utilizes a 2732 at location K1 on the Atari AVG board)
    • Tempest
    • Space Duel
    • Star Wars (1983)
  • Namco / Midway Platforms:
    • Ms. Pac-Man and Pac-Man Plus (often used on daughterboards or as replacement configurations)
    • Galaga (certain board revisions use 2732 chips for main CPU or video data)
    • Bosconian
    • Dig Dug
  • Nintendo Classics:
    • Donkey Kong (early board revisions and bootlegs utilize a mix of 2716 and 2732 chips)
    • Popeye
    • Mario Bros. (1983)
  • Other Notable Arcades: Frogger (Sega/Konami), Zaxxon (Sega), and Gorf (Midway).


Pinball Machines

In pinball, the 2732 is legendary for its role in early solid-state MPU (Main Processor Unit) and speech boards. It is most frequently found in machines built between 1979 and 1985.

1. Bally & Stern (AS-2518-35 / M-200 MPUs)

Original Bally and Stern machines used custom factory mask ROMs (9316/9332) that frequently die. Operators universally jumper-modify the MPU boards to use two 2732 chips at locations U2 and U6 to keep these classics running:

  • Eight Ball Deluxe & Eight Ball
  • Xenon (the first Bally game to feature a 2732 combo-ROM setup)
  • Centaur
  • Fathom
  • Flash Gordon
  • Power Play
  • Kiss & Dolly Parton

2. Williams (System 6, 7, and 9)

Williams used 2732 EPROMs for CPU game code and speech modules.

  • Firepower (Operators often burn a custom "ComboRom" onto a single 2732 to replace multiple smaller 2716 chips)
  • Black Knight (System 7)
  • Space Shuttle (System 9 speech boards are jumpered by default for 2732 chips)
  • Gorgar (Sound/speech upgrade paths)

3. Game Plan & Gottlieb [1, 13, 15]

  • Andromeda and Coney Island (Game Plan machines use 2732 chips at locations U13 and U26)
  • Gottlieb System 80 / 80A (Used for game-specific code chips on the MPU and sound boards)