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Old 26th Sep 2022, 12:55 pm   #84
SiriusHardware
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Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 11,556
Default Re: 1978 Commodore PET project

Sorry, I was assuming you knew how DIP IC pins are numbered. With the 'notch' at the top, marked by the 'U' in this crude sketch below, pin 1 is usually the first pin anticlockwise to the left and marked with a 'dot' or 'dimple' and then the pin numbers carry on anticlockwise around the device, so for an 18-pin chip like the 6114 / 2114 the pin numbering is as below.


Code:
1   U   18
2       17
3       16
4       15
5       14
6       13
7       12
8       11
9       10
If you meant you wanted to find the pinout in order to see what the various pins do, then here is a llink to a 2114 datasheet.

https://www.princeton.edu/~mae412/HA...heets/2114.pdf

Edit: I see events have overtaken me.
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