From: pete@dunnington.plus.com (Pete Turnbull)
Subject: [TUHS] PDP-11 questions
Date: Mon, 25 Jan 2016 16:18:06 +0000 [thread overview]
Message-ID: <56A64ABE.6070709@dunnington.plus.com> (raw)
In-Reply-To: <alpine.LSU.2.00.1601251124030.21662@hermes-2.csi.cam.ac.uk>
On 25/01/2016 11:29, Tony Finch wrote:
> Norman Wilson <norman at oclsc.org> wrote:
>>
>> It worked both ways, of course. I too suspect that a
>> majority (though I'm not so sure about `vast') of PDP-11s
>> never ran UNIX.
>
> A random vaguely off-topic example: in Cambridge a PDP-11 was used as a
> terminal multiplexor for the IBM mainframe.
The University of Leeds did something similar - an 11/34 with a lot of
Emulex serial lines and an RX02 to boot from, was connected to their
Amdahl. I remember the RX02 particularly because when we decommissioned
it and took out the floppies, both had completely transparent rings on
or near track zero, so it obviously had been left running and not
rebooted in quite some time. In the same machine room there were two
third-party cabinets with KDJ11A CPUs, more serial lines and IBM channel
interfaces. They also had at least one DX11.
The University of Edinburgh used several small PDP-11/23s in BA11-N
boxes as terminal/network concentrators for EMAS. I can't remember how
they worked but I remember they had one sync serial interface and a
bunch of DLV11-Js.
--
Pete
next prev parent reply other threads:[~2016-01-25 16:18 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-24 22:40 Norman Wilson
2016-01-25 1:55 ` David Ritchie
2016-01-25 1:59 ` Ronald Natalie
2016-01-25 2:14 ` Clem cole
2016-01-25 11:29 ` Tony Finch
2016-01-25 13:25 ` Ronald Natalie
2016-01-25 16:18 ` Pete Turnbull [this message]
2016-01-25 19:37 ` Clem Cole
-- strict thread matches above, loose matches on Subject: below --
2016-01-26 20:07 Doug McIlroy
2016-01-26 20:44 ` Clem Cole
2016-01-26 19:36 Doug McIlroy
2016-01-26 19:59 ` Warren Toomey
[not found] <mailman.29.1453684304.15972.tuhs@minnie.tuhs.org>
2016-01-25 3:07 ` Johnny Billquist
2016-01-25 3:09 ` Johnny Billquist
2016-01-25 12:54 ` John Cowan
2016-01-25 13:09 ` Johnny Billquist
2016-01-25 13:49 ` Johnny Billquist
2016-01-25 16:00 ` John Cowan
2016-01-25 16:17 ` Johnny Billquist
2016-01-25 16:43 ` John Cowan
2016-01-25 1:11 Noel Chiappa
2016-01-25 1:30 ` Clem cole
2016-01-24 22:40 Norman Wilson
2016-01-25 0:23 ` Ronald Natalie
2016-01-24 18:56 Noel Chiappa
[not found] <mailman.25.1453658502.15972.tuhs@minnie.tuhs.org>
2016-01-24 18:34 ` Johnny Billquist
2016-01-24 18:30 Noel Chiappa
2016-01-24 18:36 ` Ronald Natalie
2016-01-24 21:10 ` John Cowan
2016-01-25 0:11 ` scj
2016-01-25 0:36 ` Clem cole
2016-01-24 18:01 Noel Chiappa
2016-01-24 17:37 Mark Longridge
2016-01-24 18:49 ` Clem Cole
2016-01-25 3:16 ` Dave Horsfall
2016-01-25 5:32 ` Warren Toomey
2016-01-25 12:27 ` Clem cole
2016-01-25 13:38 ` Lawrence Stewart
2016-01-25 14:15 ` Clem Cole
2016-01-26 19:52 ` Dave Horsfall
2016-01-26 20:41 ` Clem Cole
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