Boots and passes self-test, but immediately coins itself up and starts playing itself(!), although not too well.

Well, it looks like some of the inputs are firing rapidly and randomly. Grounding one of the enable pins on one of the 74LS253s seems to make it settle down for a few seconds, so I will try playing with it.

[07/30/03] Update #1: OK, it looks like one of the outputs (z_a) is always low on the 74LS253, regardless of its inputs. Will try swapping it out.

Solution: None yet.

Random garbage (no sprites) and occasional random sounds, reboots randomly. Clock looks good, CPU and bus address and data lines have what appears to be otherwise normal activity (i.e. nothing appears stuck or floating). Pulled EPROMs and Romidented them; Romident does not identify all but 2 of them, and the two that are identified are not identified as Kicker ROMs!

OK, so I pull the EPROM archive for Kicker, and match them up that way. Three of them match up, four do not. Hmmm… One of the EPROMs does not erase(!). Going digging for a replacement…

Solution: None yet.