Commodore ChessMate, (Commodore CHESSmate)
a dedicated chess computer by Commodore with a program based on MicroChess by Peter Jennings, released in 1978. The computer was built in KIM-1 technology and had a MOS Technology processor of the 6502 family, the 28 pin 6504 could only address 8 kibibytes, where the chess program was persistant in 5 kibibytes of ROM, and used only 320 bytes of RAM  . For user interaction, it had a membrane keyboard, four seven-segment displays, and four further status LEDs.
Commodore ChessMate played the Second West Coast Computer Faire Microcomputer Chess Tournament in March 1978, where it became runner-up behind Sargon .
- DigiBarn: Peter Jennings and his MicroChess, Kim-1, and other wondrous artifacts
- Secret Weapons of Commodore: The Commodore CHESSmate by Cameron Kaiser
- Commodore Info Page - Articles: The beginning
- Ismenio's chess computer collection - Commodore CHESSmate
- CHESSmate vs. Videopac C7010 | A Commodore Geek's Blog, February 17, 2012 » Videopac C 7010
- Commodore Chessmate from Wikipedia.ru (Russian)
- Chessmate from Wikipedia.de (German)
- Commodore Chessmate from Schachcomputer.info - Wiki (German)
- Commodore CHESSmate (German)
- Commodore CHESSmate – C64-Wiki (German)
- Computermuseum Mannheim - Commodore (German)
- Commodore Chessmate | Geschichten eines Sammlers (German)