Sega System 2

From Sega Retro

System2 PCB.jpg
Sega System 2
Manufacturer: Sega
Release Date RRP Code

The Sega System 2 is an arcade platform introduced by Sega in 1985. It is a successor to the Sega System 1, though largely an upgrade, utilising the same Zilog Z80 CPU, sound chips, and Sega graphics chipset. The major upgrades of the System 2 are the addition of a ROM Board, faster RAM, and a larger 512×512 background scrolling plane.

The System 2 was supported alongside the System 1, with its last game being released in 1988.

Technical Specifications

See Sega System 1 Specifications for details on underlying System 1 specifications. The following are changes that System 2 made to System 1 specifications.

  • Board composition: Main Board + ROM Board
  • RAM: 82 KB, including 32.5 KB high-speed SRAM (Static RAM)[1]
    • Main: 4 KB
    • Video: 12 KB (4 KB video, 2 KB sprites, 2 KB palette, 4 KB collision)
    • Sound: 2 KB
    • MCU: 64 KB
  • Tilemap planes: 2 background layers (1 static, 1 scrolling), 8×8 tiles
    • Tilemap sizes: 512×512 for scrolling plane, 256×256 for fixed plane[2]

Gallery

List of Games

References


Sega arcade boards
Originating in arcades









Console-based hardware








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PC-based hardware








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