Question.. would it make design sense to use a Z80 DART has part of a keyboard input circuit? I'm trying to trace out a header to figure out what it is.. the header pins go to the inputs of a...
Very much agreed. I don’t think that CF has to be the only media type, if something else is easier, though. SD/uSD cards are definitely available rather cheaply, as are m.2 SATA SSDs. Personally, I...
The 8 sector thing on early DOS came from the datasheet for the µPD765 FDC. It was overly generous with the gaps, probably on the assumption that an open-loop DC-powered belt-drive spindle motor...
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Welcome. I hope your PET RAM debug odyssey is...
Welcome. I hope your PET RAM debug odyssey is shorter than mine.
grbrady Today, 09:48 PMMy understanding of the two messages you get there is the same as yours for Test 0 in the PETTESTER. Hopefully the author, Dave,...