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Old 26th Sep 2022, 4:32 pm   #91
ScottishColin
Octode
 
Join Date: May 2012
Location: Perth, Scotland
Posts: 1,762
Default Re: 1978 Commodore PET project

UF8 Pin 14 - 0.55v
UF8 pin 13 - 0.50v
UF8 pin 12 - 0.39v
UF8 pin 11 - 0.36v

UF7 pin 14 - 0.43v
UF7 pin 13 - 3.6v
UF7 pin 12 - 0.38v
UF7 pin 11 - 0.38v

I had to replace mine so they are marked as TMM314APL-1 2114L2 chips which I got for £3.00 ea off ebay. They don't seem to be there now - Cricklewood Electronics do have 2114 ICs for £5.70 each if you're needing them.

Colin.

Last edited by ScottishColin; 26th Sep 2022 at 4:41 pm.
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