Re: GALs, JEDEC files, and GAL burner

From: Nicolas Welte (
Date: 2007-02-10 10:03:17


André Fachat wrote:
> - I need a GAL burner (capable of burning a 20V8) Does anyone have
>   experience with the "GALBlast" burner 
>   (
>   this seems to be a viable, self-built-able solution?

I built and used the Galblast for my own GAL based projects with 16V8 and 
20V8, and it works fine. Building it is a pain, because you really need a 
circuit board with through-plated holes, otherwise the device will be 
unreliable. Ask me, I etched the board myself and sometimes it will not 
work, then I have to go looking for the bad connection ...

So if you're going to have a few boards manufactured, I surely would want 
one of those, too :) And I'm sure other will also take one.

Things the GALBlast can't do:
- preloading of registers for automated testing with test vectors
- reading of copy protected GALs (but which device can?). Maybe uses 
register preloading anyway?

> - What tools do you use to create those "JEDEC" files used to 
>   burn the logic equations into the GAL? The GALBlast page lists
>   a number - Of them WinCUPL seems viable, but requires registration.
>   any other suggestions?

I used Atmel WinCUPL as well, but don't remember if I had to register. I 
surely didn't have to pay for it.


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