*CPU : PD 780C-1, seems to be Z80 clone with various clocking, according to video system.
*Co-CPU : PD8049 : video chip ?soem sources say it is I/O chip.
*http://www.old-computers.com/museum/computer.asp?st=1&c=394
*Japanese website for an emulator : http://papicom.net/p6v/index.html
(you should try to get it translated)