I am considering adding rs232 ports to this driver to enable linking for this hardware. What I need to find out is if there is any special device/hardware/chip that makes these games communicate. Race Drivin uses a SCC68681 dual asynchronous reciever/transmitter (DUART) which I don't see something like this on a Midway V-Unit pcb.
In fact...these V-Unit games have to use some form of DUART. I can prove this from a failed attempt to link two Cruis'n USAs with crap LCD monitors (game sends garbage data the other pcb(s) can't read). If only this wasn't missed.
-.-
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Midway V-Unit; How the heck do these pcbs communicate?
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