View Single Post
Old 11th Apr 2021, 7:04 pm   #1564
ScottishColin
Octode
 
Join Date: May 2012
Location: Perth, Scotland
Posts: 1,762
Default Re: Non-working Commodore PET 3016

Already ordered. Hopefully here Tuesday.

Colin.


Quote:
Originally Posted by julie_m View Post
That's exactly what I was expecting to see; and it exonerates UC7, and pushes the blame towards UC9. Pins 12, 13, 14 and 15 are the 8s, 4s, 2s and units of a binary number which is counting up in sequence from 0000 (0) to 1001 (9).

It's probably time to think about ordering a replacement 74LS145 and a high-quality turned pin socket ..... 74HCT145 or 74HC145 probably would substitute fine, if needs must.
ScottishColin is offline