The person behind Irken Labs has already made the JVS-Pac, a useful USB Micro-controller to connect a SEGA Naomi Cab to a PC.
Well, he’s about to release the Jammafier, a small PCB that allows you to connect Jamma boards to a JVS Cab.
There’s a lot of information about the video connection, the controls, etc. There’s also a plug in for Tri-Sync monitors.
The Jammafier is on pre-order for the third batch.