Allison: 2910c version of z80 and FPGAs - a little O/T

From: ajp166 <ajp166_at_bellatlantic.net>
Date: Sun May 6 13:40:30 2001

From: Richard Erlacher <edick_at_idcomm.com>


>There's been so much unwarranted (IMHO) skepticism about the ability to
transfer
>a solid DEC CPU design into CPLD/FPGA that I'd really like to see
someone try
>it. The DEC folks didn't often do the wierd things that make circuits
act


There are several PDP-8s outther on FPGAs and there is nothing to say
others would
not be doable save for maybe enough gates (CPLDs) to do the job.

>fix the older designs so they'd work fine in current technology, and
probably
>MUCH faster. I'm not interested in DEC stuff myself, but the fact that
there


Potential for speed is definately there using newer technology.

>are several manufacturers making logical equivalents of the DEC CPU's
today


Well most of them are doing it from DEC mask sets under license. I
presume
you mean Alpha and PDP-11 (11/93 class).

>yield 150), you'll get it done. Once the design is entered, simulated,
>synthesized, simulated and tested as implemented, there's room for
fixes. The


If you dont simulate and test the sim you will likely fail.

Allison
Received on Sun May 06 2001 - 13:40:30 BST