[sdiy] PAL/PLD

[Magnus Danielson]

From: "Paul Maddox" <Paul.Maddox at wavesynth.com>
Subject: [sdiy] PAL/PLD
Date: Mon, 26 Feb 2001 20:54:48 -0000

> Dear all,
> 
>  Is there anyone on here who's good with PAL/GAL/PLDs?
> and if so do they fancy a challenge?
> 
> Id like to find this;-
> 
>  8Bit full adder with carry in+Carry out+Latch for output and Output
> Enable...
> 
> so I can add two 8bit numbers, with carry, latch the output the enable the
> output of the latchs to store it.
> 
> Oh BTW, I also need them to be FAST I mean 32Mhz+
> I could do it useing some discrete logic, but this would save me about 60%
> of the chips I need..
> Id need at least 4 initially, probably more...

First off, don't you want a fast carry chain?

If you want 4 grouped together, I think your weak timing chain will be
the carry path.

There are tricks to play if you want to avoid those problems, but are
you ready for a scary experience? ;)

Hmmm... why can't I shrug off the feeling that this has anything with
blue boxes and wavetables?

Cheers,
Magnus