Quote from KLOV:
The game's hardware is a Namco System 1 board. It uses three 6809 processors, a 63701 MCU, and many custom ICs. For sound it uses a Namco 8 channel stereo wavedata PSG, a YM3012 DAC, and a YM2151 FM sound chip.
I was about to offer my help with the Fluke 9100 but the 6809 pod Is the holy grail of any 9010 or 9100 owner....
Three of them doesn't make things easier and the custom chips are always a major PITA.
It's probably easiest and cheapest to find a working board but I have no idea if they come up often.