From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: tuhs-bounces@minnie.tuhs.org
X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on inbox.vuxu.org
X-Spam-Level: 
X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no
	version=3.4.1
Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53])
	by inbox.vuxu.org (OpenSMTPD) with ESMTP id 3234a778
	for <ml@inbox.vuxu.org>;
	Thu, 21 Jun 2018 17:40:50 +0000 (UTC)
Received: by minnie.tuhs.org (Postfix, from userid 112)
	id 6FF7DA1828; Fri, 22 Jun 2018 03:40:49 +1000 (AEST)
Received: from minnie.tuhs.org (localhost [127.0.0.1])
	by minnie.tuhs.org (Postfix) with ESMTP id 7F269A1816;
	Fri, 22 Jun 2018 03:40:38 +1000 (AEST)
Received: by minnie.tuhs.org (Postfix, from userid 112)
 id 0FAB6A1816; Fri, 22 Jun 2018 03:40:37 +1000 (AEST)
Received: from mercury.lcs.mit.edu (mercury.lcs.mit.edu [18.26.0.122])
 by minnie.tuhs.org (Postfix) with ESMTPS id 9411DA1815
 for <tuhs@tuhs.org>; Fri, 22 Jun 2018 03:40:36 +1000 (AEST)
Received: by mercury.lcs.mit.edu (Postfix, from userid 11178)
 id AC42B18C073; Thu, 21 Jun 2018 13:40:35 -0400 (EDT)
To: tuhs@tuhs.org
Message-Id: <20180621174035.AC42B18C073@mercury.lcs.mit.edu>
Date: Thu, 21 Jun 2018 13:40:35 -0400 (EDT)
From: jnc@mercury.lcs.mit.edu (Noel Chiappa)
Subject: Re: [TUHS] core
X-BeenThere: tuhs@minnie.tuhs.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: The Unix Heritage Society mailing list <tuhs.minnie.tuhs.org>
List-Unsubscribe: <https://minnie.tuhs.org/cgi-bin/mailman/options/tuhs>,
 <mailto:tuhs-request@minnie.tuhs.org?subject=unsubscribe>
List-Archive: <http://minnie.tuhs.org/pipermail/tuhs/>
List-Post: <mailto:tuhs@minnie.tuhs.org>
List-Help: <mailto:tuhs-request@minnie.tuhs.org?subject=help>
List-Subscribe: <https://minnie.tuhs.org/cgi-bin/mailman/listinfo/tuhs>,
 <mailto:tuhs-request@minnie.tuhs.org?subject=subscribe>
Cc: jnc@mercury.lcs.mit.edu
Errors-To: tuhs-bounces@minnie.tuhs.org
Sender: "TUHS" <tuhs-bounces@minnie.tuhs.org>

    > From: Tim Bradshaw

    > There is a paper, by Flowers, in the Annals of the History of Computing
    > which discusses a lot of this. I am not sure if it's available online

Yes:

  http://www.ivorcatt.com/47c.htm

(It's also available behind the IEEE pay-wall.) That issue of the Annals (5/3)
has a couple of articles about Colossus; the Coombs one on the design is
available here:

  http://www.ivorcatt.com/47d.htm

but doesn't have much on the reliability issues; the Chandler one on
maintenance has more, but alas is only available behind the paywall:

  https://www.computer.org/csdl/mags/an/1983/03/man1983030260-abs.html

Brian Randell did a couple of Colossus articles (in "History of Computing in
the 20th Century" and "Origin of Digital Computers") for which he interviewed
Flowers and others, there may be details there too.

	Noel