Re: 82S100 Data Sheet

From: William Levak (
Date: 1999-11-05 06:08:40

On Thu, 4 Nov 1999, Nicolas Welte wrote:

> Sam Laur wrote:
> > One other chance would be Russian semiconductors,
> > 
> >
> > 
> > They list PLS100-equivalents at 2.90 Swiss Francs (in lots of 10), or
> > PLS101-equivalents at 1.90 Francs. Military versions also available :-)
> Interesting, because I'm living near the Swiss border. I don't think
> that it is very useful to program a C64 PLA, they're still readily
> available. But the other ones, like the 906114-02 to -05 of the PET and
> CBM-II series might be good targets, as well as the one from the Plus/4.
> What kind of programmer is used to burn these devices? The datasheet
> doesn't say anything about that. Does it make any difference if the
> PLS100 or the PLS101 is used (3-state vs OC output)?

Yes, it makes a difference.  Open Collector requires pull-up resistors,
which the C64 does not have.  The PLS100 is required.  I've seen
programmers advertised at well over $1000 US, well out of my price range.

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