Which Galaga chip...

modessitt

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is for the character graphics?

I have one that plays but with blocks instead of ships. While it may be a RAM issue, I have another board handy I can try swapping chips off of in case it's a character ROM issue...
 
Never mind.

Did some research and determined that the problem was most likely with the 04xx chip on the Video PCB. Pulled it and two legs stayed in the socket. Swapped it out and it works fine now.

On a side note - anyone know where I can get another of these? It's not something I can burn is it?
 
Not hugely familiar with the Galagas, but the schematic seems like that is one of the infamous custom chips. It looks to have video signals off of it. Assuming I was looking at the right chip on the schematic.

If it is a custom chip, you may be boned.

ken
 
People have been creating replacements for these. I think jrok may make them and some dude that is trying to create a Pole Position replacement may be making them.

Here are some boards you could pull a '04' off of:
04xx
Galaga
PacLand
Mappy
Pole Position
Super Pacman

I just scavenged a couple of Super Pacman boards and sold the chips. It's a shame.

Anybody want the boards?

I may be picking up some Pole Position stuff this weekend if anybody is interested. I've also got some tested non-working Galaga sets. What's the going rate on these?

Kerry
 
I got's a Jrok on mine, and I didn't even put it there. Someone repaired it many years ago and there it was. Very nice little custom job.
 
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