'GAL16V08 & ETI'
Does anybody has a programmer for GAL16V8 that's easy to build? Thanks.
Someone told me yesterday that he could send me a scan of an article
from ETI about a MAX serial ADC. I don't know his name anymore. Is it
possible for him to send it to me. Thanks a lot.
> Does anybody has a programmer for GAL16V8 that's easy to build?
> Someone told me yesterday that he could send me a scan of an article
> from ETI about a MAX serial ADC. I don't know his name anymore. Is it
> possible for him to send it to me. Thanks a lot.
There aren't any good public methods for programming most PAL/GAL's. Most
manufacturers will only release programming algorithms for their parts
to corporate clients who sign a non-disclosure agreement. While there are
a number of reasons for this, I think their secrecy stems from the fact
that improper programming can easily damage the programming cells in many
PLD's without the damage being obvious; if a PLD programmed in this way
fails, the manufacturer doesn't want to be held liable.
On a more positive note, Lattice produces a chip called the ISP22V10 that
may suit your needs. It's only available in a PLCC-28 package (sorry) but
it is a 22V10 which is especially designed to be programmable by the end
user--in circuit even! Unlike most PLD's, which effectively have to be
programmed by commercial programmers, the ISP22V10 can easily be
programmed by a home-built programmer--and Lattice will even provide you
with the plans and software to do just that!
Only two small catches:  package--the ISP22V10 is only available in a
PLCC28; the pinout is the same as a normal 22V10 except for the four
programming wires (which are no-connects on a normal 22V10);  price--
the ISP22V10 costs about twice as much as an 'ordinary' 22V10. For
one-off projects, though, the extra cost of the chip should be offset by
the savings on the programmer.
>the ISP22V10 costs about twice as much as an 'ordinary' 22V10. For
>one-off projects, though, the extra cost of the chip should be offset by
>the savings on the programmer.
Lattice just announced (this week) a price restructuring which removes the
price penalty of in-circuit parts. They also announced that _ALL_ their
products will be in-circuit ONLY (ISP connection).
Andy Kunz - Montana Design - 409 S 6th St - Phillipsburg, NJ 08865 USA
Electronics for Industry & R/C Hobbyists
"Go fast, turn right, and keep the wet side down!"
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