> > Now all I need is the schematic. >> > > Would very high resolution & sharpness in pictures help you? > Yes. There may be some lines that run under the chips that would need to be metered though. > I thought the big chip F68521P (Ferranti?) would be an unknown > factor in reverse engineering the circuit. Is it known what it > does and possible replacements? Thats appears to be a Fairchild made 6821 PIA. I doubt there are any differences in it and a standard 6821. Looking at the picture - I should have all those parts on hand. I'll have to figure out what those diodes are and what the cap is though. -Matt Message was sent through the cbm-hackers mailing listReceived on 2009-09-10 23:00:49
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