So I diagnosed my Data East Simpsons as having a bad EPROM. I looked at the DE repair wiki and my problem matches up exactly what they describe as a bad EPROM at “5c and or 5b”. I have a Rottendog board. In the manual and online they show the Simpsons as having an EPROM at both 5b and 5c but my board just has one at 5c. It has worked fine for almost 3 years.
I ordered the EPROM set from Marco as I needed a few other parts for other games. When it gets here do I just put in both EPROMs or so I need to do something to the board.
The current EPROM that went bad was from Ks arcade and they sell just the 5c that they say works instead of having both but then they talk about stuff being jumpered, no idea what that means.
Any insight would be appreciated, thanks