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Old 13th Mar 2021, 4:37 pm   #1018
ScottishColin
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Join Date: May 2012
Location: Perth, Scotland
Posts: 1,813
Default Re: Non-working Commodore PET 3016

Just to confirm, this is UF7 and UF8. I'll try to remove them intact, but I won't be reporting back until tomorrow.

I only have 'normal' 18-pin sockets, not turned pin - did you say thet would be preferable anyway?

Colin.


Quote:
Originally Posted by SiriusHardware View Post
So it's up to you now whether you try to get the Video RAMs out intact so they can be independently tested, or just cut them up and hope that a replacement set will fix the display chain problem.

If you choose the former I am sure there is an already existing Arduino sketch for testing 2114 type RAMs, although it might be based on the UNO rather than the Mega. The problem you have is that if the results are bad, is that because the RAM is bad or because the tester, being used for the first time, is not working? Hard to know without a known good 2114 to test the tester with.
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