From: jnc@mercury.lcs.mit.edu (Noel Chiappa)
To: tuhs@tuhs.org
Cc: jnc@mercury.lcs.mit.edu
Subject: Re: [TUHS] 516-TSS Documents
Date: Mon, 23 Nov 2020 08:42:34 -0500 (EST) [thread overview]
Message-ID: <20201123134234.8F52218C096@mercury.lcs.mit.edu> (raw)
> On Mon, Nov 23, 2020 at 12:28 PM Erik E. Fair <fair-tuhs@netbsd.org> wrote:
> The Honeywell DDP-516 was the computer (running specialized software
> written by Bolt, Bernanek & Newman (BBN)) which was the initial model of
> the ARPANET Interface Message Processors (IMP).
The IMPs had a lot of custom interface hardware; sui generis serial
interlocked host interfaces (so-called 1822), and also the high-speed modem
interfaces. I think there was also a watchdog time, IIRC (this is all from
memory, but the ARPANET papers from JCC cover it all).
Noel
next reply other threads:[~2020-11-23 14:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-23 13:42 Noel Chiappa [this message]
-- strict thread matches above, loose matches on Subject: below --
2020-11-23 0:16 Jon Steinhart
2020-11-23 2:18 ` Erik E. Fair
2020-11-23 3:10 ` George Michaelson
2020-11-23 4:00 ` Dennis Boone
2020-11-23 6:41 ` Jon Steinhart
2020-11-19 1:29 [TUHS] 516-TSS documents Jon Steinhart
2020-11-19 3:06 ` Grant Taylor via TUHS
2020-11-19 4:54 ` Jason T
2020-11-27 2:02 ` wkt
2020-11-27 2:13 ` clemc
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