X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
X-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20120113;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type:content-transfer-encoding;
        bh=RRqCNINrvEzK9cQvmb/4fkmJ1jLAdfXmt4+Krqs/09M=;
        b=XfIAYpCZyDACmiAfSJIn8OqapzuGoFbsuy8D8D3elYbZi+XivXG43f+TH1caZ38Lh4
         kLSw51KBXtKpCIXtadb7NWqvMXjvq7AmgKME0RK8INNPpOHugHOD7Fnw52Y1/IymjI4D
         Yl3HzdwNKR+i1ZIE1qMJQwhWRxfpc1Aw3wD4k/+qcbkxctFXI1AyNlqlEmeD0nNhRSgN
         nY6/3MR9b0mj2CY/aYJxHcfKVWjmjnpWwJZEL97N8f8uDclkcfprCaW0S/dI10Ur8gQT
         WIe9p1p45OytY0ReelqgMhljoINdoZpj96bbOieycDIEIAU6nSNzTAWR0OqDGS2FuyGq
         11HA==
MIME-Version: 1.0
X-Received: by 10.112.190.10 with SMTP id gm10mr1418098lbc.2.1436229197588;
 Mon, 06 Jul 2015 17:33:17 -0700 (PDT)
In-Reply-To: <DE3F6EAF-74B7-4363-AAEF-DAD810260C2D@noqsi.com>
References: <1435510363 DOT 682 DOT 26 DOT camel AT ssalewski DOT de>
	<20150703030409 DOT 32398 DOT qmail AT stuge DOT se>
	<CAM2RGhSb=z35RYaJQmh-S4N73ng9WOj4ySmy_05J-7KGdBv8SA AT mail DOT gmail DOT com>
	<CAOP4iL3VBaS+bJhKJDk=_iuBSjDPY2-pvMdz5zPnf7A_rwD0Jw AT mail DOT gmail DOT com>
	<20150703191532 DOT GB21182 AT localhost DOT localdomain>
	<alpine DOT DEB DOT 2 DOT 00 DOT 1507040542390 DOT 6924 AT igor2priv>
	<20150705021010 DOT 369968038A2C AT turkos DOT aspodata DOT se>
	<CAM2RGhTRQCA5D=1XB2yELZ47nF9uu247CbJjOrJ82EJMNwPAfw AT mail DOT gmail DOT com>
	<A762D642-FE18-4EA4-9A55-EDBBB0A830F0 AT noqsi DOT com>
	<559AC9B8 DOT 7020205 AT sbcglobal DOT net>
	<1343E2EB-4A4D-46E0-BD87-FCBD230A1C50 AT noqsi DOT com>
	<559B0A29 DOT 7040403 AT neurotica DOT com>
	<DE3F6EAF-74B7-4363-AAEF-DAD810260C2D AT noqsi DOT com>
Date: Tue, 7 Jul 2015 00:33:17 +0000
Message-ID: <CAM2RGhTuvYSCLkm-1KrYj98NkrWP0aM2GQ_3FUFwp2=cAuAD4g@mail.gmail.com>
Subject: Re: [geda-user] OT-PL/M
From: "Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: geda-user AT delorie DOT com
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id t670XMq3001383
Reply-To: geda-user AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: geda-user AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk

Bahh... I still have spare modules at work for the LINC (Laboratory
INstrumentation Computer) along with a few drawers of point contact
transistors.The last LINC was gifted off to a museum years ago (way
before i started at the lab).
http://www.mit.edu/people/ijs/epl/LINC.html

On the topic of semiconductor tech. I was at the You Do It Electronics
a few weeks back and I met a guy who was working on GaAs integrated
circuits way way back at DEC.

Other semiconductor paliofuture:
"Seymour Cray: Whats all this about Gallium Arsenide?"
https://www.youtube.com/watch?v=xW7j2ipE2Ck
(nearly got a date once by showing someone this video)





On Tue, Jul 7, 2015 at 12:02 AM, John Doty <jpd AT noqsi DOT com> wrote:
>
> On Jul 6, 2015, at 5:07 PM, Dave McGuire (mcguire AT neurotica DOT com) [via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
>
>> 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.
>
> I assume you mean the original development. The actual code was supposed to run on any Fortran with a big enough word size. The code certainly looked very friendly to IBM Fortran IV, but I can’t say I tried it in that environment. I certainly didn’t encounter any use of the peculiar DEC Fortran extensions I’ve seen in other code.
>
>>
>>  The VAX was announced about five years after Kildall began CP/M
>> development.
>
> That's right, I wasn’t thinking. 70’s, 80’s, it’s all a blur...
>
>>
>>  (Nit: there's no such thing as a PDP-20, but there are DECsystem-20s,
>> which are PDP-10s.)
>
> I’d forgotten that nit, but now my three remaining brain cells are saying yes.
>
>>
>>> 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?
>
> As with all inventions, the origins are murky if you look closely enough, and there are variations. I recall the idea of surrounding the channel with gates from an early description of FET technology from the 1960’s. It was part of a pedagogical presentation, which then went on to explain that real FETs used a planar structure. Jeff was certainly involved in the revival of this idea, but I’m not straying any farther into the territory of patent lawyers ;-)
>
> John Doty              Noqsi Aerospace, Ltd.
> http://www.noqsi.com/
> jpd AT noqsi DOT com
>
>
>



-- 
Home
http://evanfoss.googlepages.com/
Work
http://forge.abcd.harvard.edu/gf/project/epl_engineering/wiki/