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The Namco Galaga is an 8-bit arcade game system board which was first used by Namco in 1981; the fourth and fifth titles to use it, Xevious and its 1984 update Super Xevious, were also modified to support a 129-color palette.

Namco Galaga specificationsEdit

  • Main, graphics and sound CPU: three Zilog Z80 microprocessors, 3.072 MHz[1]
  • Sound chip: Uses the same custom three-channel WSG (Waveform Sound Generator) as the Namco Pac-Man hardware.
  • Other chips: Custom input/output controller (type 1) which handles the controls. Bosconian also has a second input/output controller (type 1) which handles the speech (from a Namco 54XX DAC).
  • Video resolution: 224 x 288 (Bosconian, like Rally-X and New Rally-X, has the monitor in a landscape orientation. The other games are portrait.)
  • Notes: Each of the five games uses a different video board (except Xevious and Super Xevious, which use the same one).

List of Namco Galaga arcade gamesEdit

  • Galaga (1981) - sequel to Galaxian
  • Bosconian (1981) - the first game to have a continue feature
  • Dig Dug (1982)
  • Xevious (1982)
  • Super Xevious (1984)
  • Battles (1982) - bootleg of Xevious
  • Gallag (1982) - bootleg of Galaga
  • Xevios (1982) - bootleg of Xevious
  • Zig Zag (LAX, 1982) - bootleg of Dig Dug; another version also exists on Namco Galaxian hardware
  • Galaga '84 (1984) - hack of Galaga
  • Gatsbee (Uchida, 1984) - hack of Galaga
  • Nebulous Bee (1984) - hack of Galaga


  1. ^ "Schematics and Wiring Diagrams" (PDF). Midway Galaga Parts and Operating Manual. Chicago, Illinois: Midway Games. October 1981. pp. 7–7 – 7-9, 7–14. Retrieved 2017-02-03.

External linksEdit