6 May
2001
6 May
'01
6:40 a.m.
From: Richard Erlacher <edick(a)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
6 May
6 May
7:05 a.m.
No, it's not the Alpha or some relatively late design that interests me, but,
rather, the old solid 8's or 11's. Emanuel once told me there are a couple of
makers of PDP-11 look-alikes that work well enough to be of interest. Like the
old 8-bitters, there are plenty of things these 16-bitters did perfectly well
that still need to be done. If the software exists, it's certainly worthwhile
to build hardware to execute it.
Dick
----- Original Message -----
From: "ajp166" <ajp166(a)bellatlantic.net>
To: <classiccmp(a)classiccmp.org>
Sent: Sunday, May 06, 2001 12:40 PM
Subject: Re: Allison: 2910c version of z80 and FPGAs - a little O/T
From: Richard Erlacher <edick(a)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 out there 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
8635
days inactive
8635
days old
1 comments
2 participants
participants (2)
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edick＠idcomm.com