19 May
2008
19 May
'08
11:08 a.m.
Chuck Guzis wrote:
...
If someone were just starting out with GAL/PALs,
wouldn't PEEL be the
best choice rather than fuse-programmed devices? At least you'd get
a second chance if you flubbed your first try--and they're basically
the same packaging.
22V10's & 16V8's are electrically erasable and reprogrammable. retry as
many times as you'd like. I'm sure there is some limit on the number of
reprogram cycles, but it is bound to be far more than the number of
insertion/removal cycles the pins would put up with.
Picking up other pieces of this thread, I started using PALASM in 1985,
and I was the one who ported the FORTRAN program to the BTI 8000
computer we were using. Saying it essentially works at the fuse level
is only half the story. Yes, one can have very fine control of things,
but PALASM got smarter as the years went by, and it could do logic
minimization and mapping of state machines to logic just fine.