CompuServe Messages

Ronald, Thanks for the information. I opened up the machine and confirmed that it does indeed contain the 8372A. I do have the A501 in one of my 500s, and an equivilant in the other. I have no intention of removing them, so converting them to address the one meg of chip RAM would be no problem. Do you know exactly what trace needs to be cut and what jumper re-configured? If not, do you know of a really good repair center that might be able to tell me? It doesn't sound like a big job, but I'd have to be certain of the trace to cut, since they're so small It'd be difficult to repair if the wrong one were cut. The mother board PCB is Rev 5. You seem to know a bit about Amiga. What is the difference between the OCS, ECS and AGA chip sets? I know the AGA has greater graphics capability, but I'm fuzzy on the OCS-ECS differences (I take it from your message, that one difference is the 8370 vs 8372A). To further test your knowledge, the mother board has some writing on it, above the revision number, I take these to be initials and names of people who worked on it, but the first thing is says is, "B52 / Rock Lobster". Any idea what the B-52s and their Rock Lobster song have to do with Amiga? I guess they could have been listening to the song when they were designing the thing, but it seems like a strange thing to do. Barry