Wanted - plans for a GAL programmer

: PRR
: I would like to build a GAL programmer (22v10 at least)
: I serached all the circuit archives I know but could not find one.
: Are there plans for such a design available on the net (including
: the driver software in source or DOS binaries)?

Not on the net, that I know of.  Not that common a project, (say
compared to audio amplifiers), and the chip manufacturers have attitudes
about home built programmers that start with "we don't think it's a good
idea" and get worse from there.  (So even if people can get the algorithms,
they get stuck with a nondisclosure agreement).  Try the Elektor project
in the following FAQ.  Or look at the Lattice isp parts.

: Does any of the GAL vendors supply a free development tool
: (equations to JEDEC etc.)? If not is there something available on
: the net?

More luck there.  AMD has a version of PALASM on their web or ftp site,
and a couple of other sites have some.  Here's a bunch I've collected
over the last couple of years.  (And some more buried in the FAQ).

ftp.funet.fi in /pub/cae  
ftp.cs.indiana.edu in /pub/goo/PLD/pal2docs.zip
http://www.cs.ucla.edu/csd-gra ds-gs3/loving/www/m2l.html
ftp.ix.de in /pub/elrad/60/

So you want to build a PLD programmer: a FAQ File

[Last Revised: January 29, 1996]

(The following is aimed at the level of the basement hacker,
restricted to lower complexity parts.  Which is what I've found
in the surplus market.)

So you want to build a logic device programmer.

Here's a list of articles and databooks that I've scraped together.  
Grouped by devices supported and in order of usefulness (IMHO).

Just remember that if you build your own programmer, factor in
some money for test data (that is, destroyed parts).  Unless you're
using cheap parts, the $500 to $700 you tried to avoid spending for
an inexpensive programmer could add up sooner than you expected.

First, be aware that the manufacturers don't feel it's in their
interest to give you enough information to build one. There's a
couple of reasons.  Some them make money by selling programmers
and software.  Some of them don't want to spend a lot of money
trying to figure out why you (and thousands others like you) can't
get parts to  program (or worse, stay programmed) using your homemade
programmer.  

So, starting around 1985, most manufacturers have removed this
information from their databooks.  Expect most CMOS parts to
have proprietary algorithms.  Also expect as parts are redesigned
to be faster, the old programming algorithms may be obselete, or
have certain parameters in them shift.

But if you are convincing, some of the manufacturers will give
you the information on a nondisclosure basis.  (I've heard
National and TI are pretty nice.  And Cypress doesn't even require a
nondisclosure a