> Does anyone know what MCU is used for the Namco C65 and Namco C68? (used to handle > inputs and things for Namco System 2 games). Is there a known way to extract the > internal contents of these MCUs? Is it case of chips (or boards) needing to be > acquired and dumped/trojaned/decapped?
C68 doesn't have an internal program; it's been emulated in MAME for 4+ years. (It's a Mitsu M37450, a 6502 derivative). It also showed up as the main CPU of a Namco electro-mechanical game recently, again with an external program ROM.
C65 is a 63B05 according to the notes in namcos2.cpp. That's a 6805 variant I'm not familiar with.