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From: DMackey828 on 29 Jan 2010 23:27
Hello All,
Just wanted to let all of you know that I FINALLY created a WORKING
PLA Replacement for my C64. I have only tested it in one of the
Breadbox C64's so far.

I use Ray Carlsons Diagram,
http://personalpages.tds.net/~rcarlsen/tdsweb/EPROMPLA/eprompla.jpg

Info:
http://personalpages.tds.net/~rcarlsen/tdsweb/EPROMPLA/eprompla.txt

Much appreciated for the info Ray.

Since I'm using a Promenade C1, I had to break the file into two 32k
sections as there is NO WAY to program an entire 64k file with a
Promenade C1. Each file will need "00 20" inserted into the Beginning
of the file, they will be 32770 bytes in size.

In order to program a 27c512 eprom. BEST to use -45ns for the PLA.
you will have to run a ground wire from the CASE of the Promenade C1
to PIN #1 on the IC. This will allow you to program the FIRST HALF
(32k) of the eprom. Remove the wire to program the SECOND HALF
of the eprom.

I am using Promshell to do this. You can find the disk on my FTP
site : ftp://www.n2dvm.com//Commodore/Programs/Eprom/promshell.zip

Here are the files I used for the PLA. They already have the "00 20"
added to them to make it easier on you.
ftp://www.n2dvm.com/Commodore/Programs/Eprom/PLA-Files.rar

Have fun.
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