[sdiy] uC with mul

[harry]

I used the View Logic package owned by our company (well hell... it was for
them anyway...)

I used schematic entry.  I designed a logic circuit in discrete, then talked the

customer (our company and our partner) to go with the FPGA.  There was some
learning curve for me... but I'm sold.

The simulations can lie... just like spice !!!  Some techniques that would work
with discrete logic will NOT work in an FPGA.  Asyncronous design is a
dangerous thing !!!

I'm looking for what I can deal with at home. I just KNOW that an SPLD
(PAL, GAL whatever) is the perfect device for the LED display driver I need
for my theremin project.  But I need to learn the languages, and get the ability

to compile and program.

Oh yeah... for cheap. Free is even better....   ;^)

H^) harry

Paul Maddox wrote:

> Jim/Harry,
>
> >     Xilinx does have free tools you can download from their website.  I
> assume
> > that you were using the Foundation tools at work.  I have not downloaded
> the free
> > Xilinx tools myself.
>
> This will be the Xilinx webpack thing I keep hearing about...
>
> >     I have a couple of tubes of Xilinx XC4003A parts that I am still
> trying to
> > figure out what to do with.  I wanted to put a top octave generator in
> them, but,
> > for what I wanted to do, they were just a smidge too small (which
> surprised me,
> > since you can put a lot even into 3000 gates, but for making counters, the
> thing
> > ran out of fast carry blocks, some how).  I can, however, put two 24 bit
> phase
> > accumulator type NCO's into the parts, so, I might use them for that.
>
> I like PA Oscs, nice, stable, sexy...
>
> >
> >     FPGA's rule....(ooopppss, I said a digital thing!).
>
> I agree,
> I just wish there was a decent book or Webpage with an 'idiots guide to FPGA
> and VHDL'
> something simple and step by step...
>
> I have some VHDL code written by a friend and some of it makes sense, and
> some of it just looks like russian to me..
>
> Anyone up for doing this?
> Im sure that a step by step FPGA tutorial section would be a huge hit
> amongst diy'ers.
>
> Paul
> _______________________________________
> Wavesynth home page;-
>     Http://www.wavesynth.com
> Modulus synthesizers home page;-
>     Http://www.modulus.wavesynth.com
> PPG Synthesizer pages;-
>     Http://www.PPG.wavesynth.com
> Opensynth Project;-
>     http://www.opensynth.wavesynth.org/
> Waveterm C Project page;-
>     Http://www.waveterm.com

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