Hey guys, the saturn SMPC (peripheral controller) is a hitachi unidentified 4-bit cpu with a test pin. Think you can give it your love?

http://www.db-elec.com/home/technical-info/saturn/schematics has the schematics showing the pinout, the fact that it's a 4-bitter is in the saturn docs (and we all know that sega docs are always perfectly correct).