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Old 22nd Jan 2021, 10:01 am   #208
SiriusHardware
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Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 11,483
Default Re: Non-working Commodore PET 3016

I must have been tired last night, read the SYNC and RDY voltages the wrong way around so Colin, ignore #203 and #206.

Agree with Mark that if you can use your scope to verify that there is / is not activity on at least pins 9, 10, 11 of the CPU we can go forward from there. If you had a spare CPU we would ask you just to try that in, but I don't think you do so we'll proceed by other means.
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