- Dips settings have description of "Language #". The languages are German, French, Spanish. ROM_LOAD( "checkmat.d", 0x1000, 0x0400, NO_DUMP ) /* language ROM */ Rom needs to be dumped and added first before language dip adjustment can be completed. gregf (ID 01050)
- 0.112u4: Derrick Renaud added Discrete sound to Checkmate. Still need to breadboard to get noise/filter frequencies.
- 0.111u4: Changed 8080 CPU1 clock speed to 1996800 Hz. Changed 'Unknown' to 'Unused' dipswitches.
- 0.34b6: Al Kossow added Checkmate (Midway 1977).