RE: Additional cartridge ROM question

RE: Additional cartridge ROM question

From: Bil Herd <>
Date: Wed, 25 Mar 2009 09:03:51 -0500
Message-ID: <>
(Big grin on face while looking at 25 year old PAL terms)

-----Original Message-----
From: [] On Behalf Of Marko Mäkelä


> Bil, the PLA equations I referred to in my last message are the logic terms
> of the 82S100 PLA in the Commodore 64.  They were first read in 1994.  The
> equation for CASRAM was simplified later.
> Lol... I remember casram.  Is there a link to the equations somewhere online?

Yes, I posted it yesterday:

The simplest equations (by Dave Dahle, last year) are here:

I haven't verified those, but it shouldn't be hard to replace the
equations in one of the C programs that I wrote, available from the
same directory, and verify that the generated "truth table" binary dump
does not change.


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Received on 2009-03-25 14:39:58

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