From mboxrd@z Thu Jan  1 00:00:00 1970
From: lars at nocrew.org (Lars Brinkhoff)
Date: Thu, 05 Dec 2019 18:33:11 +0000
Subject: [COFF] ARPAnet now 4 nodes
In-Reply-To: <29ffe051-066c-7675-f7cc-5356b17c34de@computer.org> (Rob
 Gingell's message of "Thu, 5 Dec 2019 10:20:06 -0800")
References: <alpine.BSF.2.21.9999.1912051108010.99521@aneurin.horsfall.org>
 <20191205041940.GP32688@mcvoy.com>
 <29ffe051-066c-7675-f7cc-5356b17c34de@computer.org>
Message-ID: <7wtv6epqqg.fsf@junk.nocrew.org>

Rob Gingell wrote:
> 1: UCLA: Sigma-7
> 2: SRI: SDS-940
> 3: UCSB: IBM 360/75
> 4: Utah: PDP-10
[...]
> If you peruse the maps at the Computer History museum site you can see
> some real diversity in the systems. For instance in April 1971
> Burroughs had an IMP and a B6500 front-ending the under-construction
> ILLIAC-IV (later moved to Ames and front-ended by a couple of
> PDP-10s). PARC's MAXC appears in the mid-1970s.

Maybe this is a good time to ask if anyone knows whether any of those
diverse systems has software preserved?  Specifically, the
implementation of the NCP and 1822 Host-to-IMP protocols?