> > The free downloadable software works great.  These things are too
> cool not
> > to familiarize yourself with, even if you are a die hard discrete
> gate user.
> >
> > http://toolbox.xilinx.com/docsan/3_1i/data/common/jtg/dppb/appb.htm
> >
> > BTW, the XC9572XL  is a great part that has 5 volt tolerent 3 volt
> inputs.
> > ~$3.91 in singles  for 10ns 100pin tqfp at digikey.
> <snip>
> > BTW: A nice tutorial here:
> > http://www.al-williams.com/pldhome.htm
>
> Well, PICs were complicated too, untill I started learning about them.
> Now I reach for a PIC before I reach for a 555. Guess I(we?) have some
> learning to do. :o)
>
> After reading the sites Dan posted (above), I think I'll definitely be
> looking into CLPD for future projects.
>
> BTW, are they all PLCC, QFP and such, or are there some in DIPs and
> SOIC? Seems like all those pins are overkill for a lot of
> applications. (not to mention loads tougher to prototype with)

        Most of them are PLCC and other surface mount type packages. Of course,
there do exist PALs, which come in DIP, but I've always found them to be FAR
to restrictive in use. Generally if I need a DIP sized package and speed
isn't the utmost concern I just use a PIC. If speed is important then I'd
generally go for a CPLD. The 44pin PLCC package, once you get used to it's
through hole socket, is actually quite easy to deal with. And they are
certainly getting cheap. TTYL

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