Which makes me think... How does the GALBLAST software tell
if it's connected to a 'real' programmer (with DAC, etc.) or
just the minimal version?

I'm totally at loss...
Has anyone ever managed to make this work?

Please help!
Christian VA2CBW


On Tue, 4 Jul 2006, CSB wrote:

> Hello all,
> I'm trying very hard to program a GAL22V10 (B or D, I've
> tried both) using the 'minimum effort' approach described
> with the GALBLAST software, but with no success. I can
> read the PES (I get valid info about the chip), so at least
> part of my hardware works. But when it comes to actually
> programming the darn chip, it won't work!
>
> These are recycled chips, that were not security-fused. I
> apparently can read the fuse map, and get a credible .JED
> file, but I can't get the chips to erase or program.
>
> I've scoped the SDIN / SDOUT pins during transfers, hoping
> to find sloppy edges (that would have been an easy one...),
> but they look fine. I don't know how short they should be,
> but as I said I can read the chip so they must be in-spec.
>
> Then, I scoped the EDIT pin, to see if my 14.00 V or 14.50 V
> (depending on the chip) were stable, and they were. No sign
> of switching was to be seen (I'm generating them from a
> 12V step-up converter).
>
> Now I really don't know what to try next. I'd really like
> to make this work without a more complicated programmer.
> I don't want to buy / make a programmer for this one little
> project...
>
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