question

I bought this MV1A board off aliexpress and made a supergun. Works fine but on inspecting the underside of the board there is a missing component labelled D5, near the Jamma edge. Does anyone know what the purpose of this smd is for and if its recommended to replace it? It looks almost like a...

Hello!! ^^ I just got my hands on a Naomi Universal Cabinet after years of wanting one. I was planning to restore it which sadly seems to already have been done to a degree (lazily) with white paint, but i would like to undo that and redo it with more care. In looks i'd like it to be as close...

Just today found out that using the supermodel emulator it is possible to have "live Cam / spectator mode" in Daytona USA 2. I was wondering if is this something that you can achieve via original hardware (and how) or if this is some sort of hack via the emulator. Thanks!

Got this CPS 1.5 board (cadillacs & dinosaurs) without the filter board. Can anybody guide me what’s the pinout of the edge connector located at the B board?