HMS electronics sells them still for $35USD each, which is probably why I couldn't find an image. So far at least it appears intact but unless someone says otherwise, I'm not posting it here for review. Still freaked out.Īt this point I've also managed to disassemble the game chip code which is straightforward MCS-48 assembly. My theory is it should start to do something and then fail because if the game code needs 128 x 8 ram space and should at least hang. It's electrically identical but has half the internal ram. I dug through my box of junk and found an Intel P8035L microcontroller. Instead it just continues throwing garbage at me. I should at the very least see a tilt code.
I noticed that if I just pull the relay board I can shut everything but the three digit display on the front up and the display can turn out to be handy for diagnosing if it's still losing its mind or not. I'm seeing this done to other boards and should be sufficient.
The battery has been substituted with a 3.6V rechargeable pack from a cordless phone. Replaced transistor on speculation that a 2N3904 should be close enough to the original spec.
