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Message-ID: <559B0A29.7040403@neurotica.com>
Date: Mon, 06 Jul 2015 19:07:21 -0400
From: "Dave McGuire (mcguire AT neurotica DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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To: geda-user AT delorie DOT com
Subject: Re: [geda-user] OT-PL/M
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Reply-To: geda-user AT delorie DOT com

On 07/06/2015 06:37 PM, John Doty wrote:
>> More history: In the early 80s, IBM first went to Gary Kildall of
>> CP/M for their IBM-PC DOS.  CP/M did have several PL/M modules (pip
>> for one).  If Gary had not ignored IBM and go sailing instead of
>> meeting with the IBM execs, IBM PC-DOS may have had some PL/M in
>> it.  However, we got ms-dos instead.  As I understand it, Kildall
>> used a DEC PDP minicomputer running a PL/M cross compiler in order
>> to develop CP/M.
> 
> Must have been one of the bigger DEC machines. He wrote the PL/M
> cross compiler in Fortran, and it needed at least a 32 bit machine.
> PDP-10, PDP-20, or VAX maybe.

  Please pardon me for butting in, but someone mentioned PDPs, so.. ;)

  The PL/M was done on a PDP-10 (DECsystem-10), a 36-bit machine.

  The VAX was announced about five years after Kildall began CP/M
development.

  (Nit: there's no such thing as a PDP-20, but there are DECsystem-20s,
which are PDP-10s.)

> In ’75 we upgraded our Intellec system to an 8080, and of course we
> had to upgrade PL/M as well. One application of that system was Jeff
> Bokor’s bachelor’s thesis, an early digital CCD camera. Jeff went on
> to be one of the inventors of the FinFET: there are probably hundreds
> of millions of those in the computer in front of you.

  Aren't the "FinFETs" in modern microprocessors not the same thing that
Bokor et al developed more recently?  It was my impression that the term
had been overloaded and the fancy new FinFETs in all the trade rags
these days are something different, but I must admit that I don't know
squat about FinFETs (either type, if there are two).

               -Dave

-- 
Dave McGuire, AK4HZ
New Kensington, PA