pac man gal prom

[grobda]

anyone got code for programming a gal to replace the colour prom at 7f? or tell me how to do it?
I've got some of phil murrays adaptors but can't find much info on how to do it.
cheers

 

[Ace`]

It's a pain in the ar*e, from memory you run the prom dump from mame through this old software https://downloads.reactivemicro.com/Electronics/PLD/Software/ which requires dos/freedos or a really old version of windows. Then using the outputs that gives you, you create a jed file using WINCUPL.

As I always forget the steps for Wincupl I've got this saved, https://web.archive.org/web/20151218033456/http://dreamjam.co.uk/emuviews/pal/index.html

about half way down is the wincupl part.

This is why I usually replace a bad prom with another freshly burnt prom.

 

[Ace`]

Maybe the PAL2GAL step can be skipped since you're going from a prom and not a pal, I cannot remember exactly. Caius is the person to ask, he has a discord link on his blogspot.

 

[philmurr]

I tried compiling 7F for the GAL but it won't compile even with minimisation/optimisation so looks like it's a no-go (it's not always possible).

I'd go along with the suggestion of using a proper PROM

 

[grobda]

thanks for the replies.

i've got 3 proms of dubious provenance I bought years ago. no way to test or program them.

https://www.retroclinic.com/leopardcats/galprom/galprom.htm shows the same amount of data fitting in a 22v10 which I have got and can program so I'll probably try that.

 

[philmurr]

thanks for the replies.

i've got 3 proms of dubious provenance I bought years ago. no way to test or program them.

https://www.retroclinic.com/leopardcats/galprom/galprom.htm shows the same amount of data fitting in a 22v10 which I have got and can program so I'll probably try that.

Post them down to me and I can check/programme them if you want to

 

[caius]

Hi to everyone,
I was able to compile the Pac-Man BPROM @7F into a GAL2210, I attach the .JED.You need to build an adapter according to this pin assignement :

A0    PIN 8;
A1    PIN 7;
A2    PIN 6;
A3    PIN 5;
A4    PIN 4;
CE      PIN 3;
 

D0    PIN 23  ;
D1    PIN 22  ;
D2    PIN 21  ;
D3    PIN 20 ;
D4    PIN 19;
D5    PIN 18  ;
D6    PIN 17  ;
D7    PIN 15  ;