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Thanks for the information, Justin. It's interesting to hear about your early programming adventures. The MPS7600 chip I'm looking at was built by the company

by kens 4y ago

Thanks for the information, Justin. It's interesting to hear about your early programming adventures. The MPS7600 chip I'm looking at was built by the company MOS Technology, not by General Instrument or AMI. (MOS Technology, which is unrelated to Mostek, later became part of Commodore.) The MPS7600 doesn't have any external address or data lines, so there's no way to program it externally or attach an EPROM. So I think you're discussing a different chip. Maybe the General Instrument CP1600 processor, which was used in various video games?

justinlloyd 4y ago
Sketchy details from memory, so if I said anything that conflicts, assume your version of the facts is more correct than mine. I do think I was confusing/conflating AMI MOS with MOS. And do recall that Mostek was a separate company. It doesn't help that MOS chose such a generic name for their company. Didn't they realize this wouldn't be searchable via Google?!? Did they learn nothing from Microsoft naming a language C# and an API .NET?!? It is quite possible I am discussing a different chip. Again, apologies if I lead anyone astray, certainly not my intention. There were many such devices that came through my hands over the years. I wrote firmware in assembler for a bunch of slot machines I would swear blind used a TMS9900 but speaking to friend a few months back he assured me that it was not that CPU at all but one very much like it.