GAL (PAL) Design and programming / Eprom 2708

By leonlas

Resident (52)

leonlas's picture

21-06-2020, 16:55

I have a question:
1.)
You certainly programmed - drew - designed the GAL structure. I need your help. What program (also a graphic mode - to view the designed structure)? Such according to you the most transparent (simple, easy and understandable). I want to compare the programmed GAL (it is not protected and I can rip the content) and rearrange the inputs and outputs and possibly add something to the free pins.
I have a programmer (wellon).
2.)
The second topic is a matter of reading and programming Epromów type 2708 and the dead computer. My programmer does not overwhelm 2708. So what can I bite (apart from buying a second programmer) does anyone of you have one that overwhelms 2708. Or maybe in a "simple" way you can woo LPT to read or program .... or something in this direction Wink
best regards

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By Pentarou

Champion (275)

Pentarou's picture

21-06-2020, 22:50

1) WinCUPL, PALASM
AFAIK these programs work by text input, no graphic mode.
Although it seems it's possible to use some $$$ PCB design software to generate the equations and then feed them to WinCUPL.

2) Use a 2716 instead?
https://pinwiki.com/wiki/index.php?title=Leon_Borre_Changing_Zaccaria_2708

DIY programmers:
https://translate.google.com/translate?hl=en&sl=auto&tl=en&u=https%3A%2F%2Fmuseo.freaknet.org%2Fit%2Feprom-2708%2F
http://tech.mattmillman.com/projects/an-easy-to-build-programmer-for-2704-2708-mcm68764-mcm68766-eproms/

By leonlas

Resident (52)

leonlas's picture

24-06-2020, 22:40

THX!

By Pentarou

Champion (275)

Pentarou's picture

09-08-2020, 20:04

Take a look at the free program Digital, it seems to do some of the things (Graphic editing/GAL creation) you were looking for.