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Old 19th Feb 2021, 2:18 am   #605
SiriusHardware
Dekatron
 
Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 6,684
Default Re: Non-working Commodore PET 3016

Colin, could you please scope the following pairs of pins for us, this time with the data pins 26-33 of the CPU disconnected from the system so that the CPU will run. I know it runs with just several data pins connected but we need all the data buffer outputs on the CPU side to be connected to the same thing (...nothing).

UE9
2,18
4,16
6,14
8,12

UE10
2,18
4,16
6,14
8,12
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