2 Jul
2000
2 Jul
'00
4:40 a.m.
20C1 is a 24-pin programmable decoder with two sums of 8 product terms OR'd
into a single final Or/Nor gate. It's clearly intended for use as a
decoder, having 20 inputs and a single output sum of products with both true
and complement outputs on separate inputs.
It's right here in my '89 NS programmable logic databook.
If you want, I can (probably fairly soon) scan it for you and email you the
image (in TIFF).
----- Original Message -----
From: William Donzelli <aw288(a)osfn.org>
To: <classiccmp(a)classiccmp.org>
Sent: Saturday, July 01, 2000 8:47 PM
Subject: Odd PAL
I finally unburied a whole shipload of PALs I bought
many years ago, and
started to sort them. I have a few National Semiconductor types called
20C1s. What is the organization of these? Apparently not a popular item,
as I found little information on the web.
William Donzelli
aw288(a)osfn.org