Re: Simple GAL programmer for GAL22V10

Thanks David, I'm going to have a few of these PCBs made. I had the same problem with the MiniPro and Lattice GALs.

Anybody enjoying using these GALs for logic might want to look at CPLDs. I've been using Xilinx CPLDs in some projects and

they are fantastic for getting a lot of logic on one chip. Using a schematic for your top-level design in the ISE suite makes things very easy,

and a simple programming header on the PCB makes circuit corrections/enhancements doable with minimal board changes (if any).

Bit of a learning curve at first, but they're great.

Thanks again for uploading the GAL programmer files to the Wiki! :)

- Ed

On Wednesday, April 29, 2015 at 1:10:27 PM UTC-5, David Fry wrote:

To all,

I have now uploaded the construction/testing notes and KiCad project files for the ELM Simple GAL programmer to the N8VEM wiki

it can be found at http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=ELM%20Simple%20GAL%20Programmer

Regards

David Fry

On Wednesday, April 29, 2015 at 2:08:58 PM UTC+1, David Fry wrote:
One PCB left folks !!!!

Regards

David Fry

On Monday, April 27, 2015 at 6:16:32 PM UTC+1, David Fry wrote:
Hi Everyone,

Whilst recently building up my S100 XVGA board I stumbled upon a problem with programming the Lattice GAL22V10's, my Chinese MiniPro programmer claims to be able to program them but alas it failed to burn any of the GAL22V10B's I had. Interestingly it would program GAL22V10's (without the A,B,C or D suffix) but this left me with a problem as I have about 20 x GAL22V10B's and only 2 x GAL22V10's, internet research seems to suggest that the programming requirements may vary between different GAL suffixes and even different manufacturers of the same part.

In the end I tracked down and old internet webpage for a simple Lattice GAL programmer that programs various Lattice GALs via a PC parallel port. The software is very basic being MSDOS command line stuff but it works for me and gets the job done. So far I have erased and programmed Lattice GAL22V10B's and Lattice GAL16V8D's I cannot vouch for any other GAL models or GAL manufacturers.

More details can be found on the following link.

http://elm-chan.org/works/pgal/report_e.html

As a one off I have had a short PCB run done of 10 boards (they actually supplied 12) but unfortunately the PCB house made a small but correctable error in the fabrication of the board (see image GALprogPCB Error.jpg), I have received a full credit for the boards and so I got them for free.

I would like to offer these PCB's for FREE to anyone out there who does not have the facility to program GALS, with the restriction of one board per person and you pay the P+P (shipping) cost which will be UK £3.75p to USA/Canada (1st class airmail) or UK £3.50p to Europe (1st class airmail).

If anyone is interested submit your name to this post and payment can be sorted once the names are in.

I'm happy to upload the KiCad files if someone can tell me which folder to put them in.

regards

David Fry