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Old 23rd Feb 2021, 11:36 pm   #637
ScottishColin
Octode
 
Join Date: May 2012
Location: Perth, Scotland
Posts: 1,762
Default Re: Non-working Commodore PET 3016

I get the attached from all of UD6-9 when the scope is set to 1X and pins 26-33 are removed from the 6502 socket.

https://drive.google.com/file/d/1_rR...ew?usp=sharing

Colin.

Quote:
Originally Posted by SiriusHardware View Post
I should have said: Look for activity on the PROM selects with the CPU databus disconnected from the system databus, so that the CPU runs continually.
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