5 Sep
2007
5 Sep
'07
6:51 p.m.
--- woodelf <bfranchuk at jetnet.ab.ca> wrote:
So the benefits of pals/gals are not so much
integration or a high degree of, but rather
modification? You wouldn't want to, for instance,
attempt a *reproduction* (of say a unobtainium piece
of silicon) by using a bunch of galpals instead of an
FPGA?
How much does the typical programmer cost? Are they
*easy enough* to build?
You do
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If you are
designing your own circuits, a 18 or
24-pin GAL can replace
several square inches of TTL, with the benefit of
being able to make
changes later that don't involve cutting
traces
and adding blue wires.
You lose the ability to poke around in the
middle
of select circuits,
and to make substantial changes, but it all
depends on what your goals
for the project are if that's a worthwhile
tradeoff or not. have to start
with a GAL programmer, though. Not
all hobbyists have
them, so if you make a product to sell, as Bob
does, you should
consider selling programmed parts for those that
can't burn their own.
That is the downside , the programmer for them.
I suspect 18 pin GAL is a typo. They come in 20 and
24(thin) pin packages.
-ethan