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Sega SG-1000

2nd Generation Console


The SEGA SG-1000 was test-marketed in 1981 and released to Japan in 1983. Sega released an updated version called the SG-1000 Mark II and a computer version, the SC-3000.

The SG-1000 runs all SC-3000 games and applications except for Music and Basic cartridges. There was also a keyboard add-on made for the SG-1000 in efforts to provide it with computer-like functionality.

The SG-1000 is one of the most rare and sought-after devices.

Date Range: 1981 - 1985

Release Price: 15,000 Yen

Sega released the Mark II in 1984, though the computer version of the console went on to outsell the Mark II.

The SG-1000 Mark III was redesigned and renamed for markets outside of Japan as the Sega Master System, which is essentially a third generation console.

Product Specs:

  • 256 x 192 video
  • 4-channel mono sound
  • 3.5 Mhz processor
  • 16 colours
  • 8KB RAM
  • 18KB ROM




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