🚀 go-pugleaf

- lane@duphy4.physics.drexel.edu writes
- wlsmith@valve.heart.rri.uwo.ca (Wayne Smith) writes:
-> We are considering some small scale PAL/GAL development, and I was
-> wondering what is the lowest-cost PC-type development system.
-> The pal's/gal's would replace 7 to 10 conventional ttl chips which
-> currently perform 16 bit counting functions (straight counters and
-> programable interval timers) with multiple tri-state registers.
->

-74F525's make nice 16 bit count-down timers, but they're hard to get
-hold of.  Otherwise, you need some pretty fancy macrocell-type PALs to
-do the job.  I don't think you can do a 16 bit counter even in a 610:
-8 is about the limit.

I can only partialy aggree here.  I am not a PLD/PAL/Whatever logic
expert, but I know for sure that the EP6xx, 5C060, and many other
Intel/Altera macrocell type devices can do 1bit/macrocell syncronous
counters.  I have done this before and I am willing to mail anyone the
design file that is interested.

Chris
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