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TL;DR If your Pac Man machine has buttons that can be lit, you can have them controllable, so if there's a credit on, the 1 Player Start button will light up, more than one credit, both Start buttons light. Also, if you want to switch between Pac Man and Ms. Pac Man, there's circuitry for that...

Hi. I got a few crates of arcade PCBs to repair. I got most of them working, but this one is a little more challenging as it's missing all of its ROMs. OK I could desolder the three 32 byte Color PROMs and check if Romident has them, but I don't wanna risk damaging them. So... the only board...

Hi. Err, this is a big Work In Progress. Nowhere near finished. I'm gonna abuse this post as a blog or something, so expect updates. OK before you TL;DR, can you please point me in the direction of a program that can convert an audio file with FM encoded data into a binary? Otherwise I will...

This page basically already exists here. And it's probably more straightforward. And it's bilingual (German / English). So there's few chips on Atari's Asteroids (and some similar boards) that you can't get new. Or at all. Or at sane prices. Except for the DACs. The AD561 is hard to get, only...

Hi. When I first got to the Arcade- and Pinball Museum Seligenstadt, their TANK had a color TV and the original monitor was gone, nowhere to be found. It also ran an emulation of Super Tank. So when I got to fixing the original mainboard, I noticed an abundance of video signal parts that just...