RadioShack 1650 Fast Response: Concord II, has the 0609V171 MCU

CXG Computachess III: pretty sure it's HD6301V1C42P
Fidelity Genesis: should also have the HD6301V1C42P

CXG Sphinx Comet: wiki says it has a V1, but I'm not sure.

Chess King Triomphe: interesting, here is a photo of the inside http://www.chesscomputeruk.com/html/..._triomphe.html