On 2/23/2018 10:39 PM, Dr Jefyll wrote: > Jim Brain wrote >> I used the following schematic from Dr. Jefyll as my basis: >> >> http://forum.6502.org/viewtopic.php?p=17597&sid=0966e1fa047d491a969a4693b5fed5fd#p17597 >> >> His/her explanation: > Thanks to Jim's efforts, and those of others, we'll soon get to the bottom > of this. Very exciting! If anything's unclear in my 6502.org explanation I > hope someone will call attention to my error. 6510 and 65816 are only very > distantly relevant; the circuit I posted is squarely focused as a 6502 or > 65C02 add-on. Initial testing was unsuccessful. I have added some more comments to the github repo, so folks can hopefully help debug. I pulled a working NMOS 6502 from a working VIC, and used that. I installed in a working CBM-II machine, with the CPLD logic loaded. No joy as yet. I will try to hook up my logic analyzer to see what the startup code looks like. Jim Message was sent through the cbm-hackers mailing listReceived on 2018-02-24 22:00:02
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