I have used schematic capture for these very CPLD's in the past.  It's
a simple process.  Just draw the
 schematic using the schematic capture app part of the Zilinx
environment, compile it, and burn it into your
 part.  You have to do a little bit of house keeping before you get that
far though such as determining what
 inputs and outputs you want, giving each a name, etc., etc., but it
isn't difficult at all.  At least not
 with the stand alone package. I have not used the web version, so I
can't speak for it.    The last time I
 looked, (some time ago), you could still download the older stand alone
packages.  If the web version don't
 work for you, you could try the standalone package.


 Regards,

 Jim

> -------- Original Message --------
> Subject: Re: [EE] Programmable logic
> From: Herbert Graf <hkgraf@gmail.com>
> Date: Fri, August 27, 2010 1:12 pm
> To: "Microcontroller discussion list - Public." <piclist@mit.edu>
>=20
>=20
> On Fri, 2010-08-20 at 13:00 -0700, Denny Esterline wrote:
> > On Fri, Aug 20, 2010 at 11:25 AM, Carl Denk <cdenk@windstream.net> wrot=
e:
> > > You say "Programmable Logic", add one more word, "Controller" >> PLC =
,
> > > and your application points to that. There are numerous out there, yo=
u
> > <snip>
> >=20
> > Uhh, errr, thanks for the suggestion, but no.
> > I'm actually quite familliar with PLCs, one of our other product lines
> > has consumed about 250 of them the last couple years. This is
> > definitly not an application I want a PLC for.
> > I used the term "programmable logic" as a genaric term for PALs, GALs,
> > PLAs, PLDs, SPLDs, CPLDs, FPGAs etc. Seems like every manufacturer has
> > a silghtly different name for them, or several at various levels of
> > capabilities.
>=20
> The Xilinx 9536 (it's a CPLD, given your application going to an FPGA
> isn't worth it) should fit the bill (if you need more logic, the 9572
> has twice the capacity with the same footprint if you choose your
> package right).
>=20
> The Xilinx webpack is a free dev environment that gives you all you need
> to get going.
>=20
> I've never used "schematic capture" type solutions for programmable
> logic, so I can't comment there.
>=20
> If you know C, then verilog will feel familiar. I'd steer clear of VHDL,
> it can be very "interesting" in the way it does things, and is more of a
> hill to climb.
>=20
> TTYL
>=20
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