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Old 20th Mar 2021, 9:08 pm   #1191
ScottishColin
Octode
 
Join Date: May 2012
Location: Perth, Scotland
Posts: 1,822
Default Re: Non-working Commodore PET 3016

Attached. UG7/6 and UG7/12 'pulsed' between high and waves - I've tried to show what my scope shows with the attached files.

Colin.


Quote:
Originally Posted by Mark1960 View Post
UB2-8 looks good.

Now need to check RAS and CAS again. UH1-6, UH1-8, UG1-11, UG7-6, UG7-12

Note the two different sources for RAS, one is for refresh, the other for read and write for bank selected.
Attached Thumbnails
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Name:	UH1-6 20210320.jpg
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ID:	229683   Click image for larger version

Name:	UH1-8 20210320.jpg
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Name:	UG1-11 20210320.jpg
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ID:	229685   Click image for larger version

Name:	UG7-6 1 of 2 20210320.jpg
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ID:	229686   Click image for larger version

Name:	UG7-6 2 of 2 20210320.jpg
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ID:	229687  

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