From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, HTML_MESSAGE,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id a2d046be for ; Fri, 21 Feb 2020 18:35:14 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id 7B43D9CB8C; Sat, 22 Feb 2020 04:35:13 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 845DD9CB79; Sat, 22 Feb 2020 04:34:41 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id CCEDA9CB79; Sat, 22 Feb 2020 04:34:38 +1000 (AEST) Received: from mail-pg1-f169.google.com (mail-pg1-f169.google.com [209.85.215.169]) by minnie.tuhs.org (Postfix) with ESMTPS id B2C8C9CB78 for ; Sat, 22 Feb 2020 04:34:37 +1000 (AEST) Received: by mail-pg1-f169.google.com with SMTP id d6so1403861pgn.5 for ; Fri, 21 Feb 2020 10:34:37 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:reply-to:subject:to:references:from:organization :message-id:date:user-agent:mime-version:in-reply-to :content-language; bh=GMyzIZJFUmFGs1wAjikGcmTBE/mmm7loborUua5VuFs=; b=R/zjR9uEVWXbcTNvLMfvY5GPi1zjC8GgiARb3T/bBw4JwIK+08iwLR5BeKOkgQqUXp kApHlp1cI2jDjg8Qb/VDXC3OZqF5TkCuQLcPVzGWiQSxoIHvElg2cvWt+X2+ICbXcS4u StrXGwQfDKixf/bzItf1myOnaqO8RgLq9pjf+zx9XK2bEGWaEVG5p01fXrzfZ3qfdf/L v9lO079CcMCBy7YgMH0PunFtVu+vwPeKvTNUwiideejKx2ENjq3dO7tOJixJjF+t0hyV C15XBz0QbkQy20yCXvCU3FlfQ3AodgDNWrMf/xWTLLFcGcobvRBZHdTWrbXegpQOlg/e dUSg== X-Gm-Message-State: APjAAAWB0Fe5G9Br+0xQGF7GDw0ESV87PPoh5+frOsH2RaWKo+099LDT gfFYx46bCGP9AlbizNfDuR8= X-Google-Smtp-Source: APXvYqyOpIdN/kanmEy+nbmor+NuCCpUiEvNXLBiNc4h2wMXC2ubJAFnkDwM7lxNb7jBeozOduriKA== X-Received: by 2002:a65:6843:: with SMTP id q3mr2664692pgt.269.1582310077113; Fri, 21 Feb 2020 10:34:37 -0800 (PST) Received: from ?IPv6:2601:601:a000:cb0:cdcf:cb23:955d:2b63? ([2601:601:a000:cb0:cdcf:cb23:955d:2b63]) by smtp.gmail.com with ESMTPSA id m128sm3585465pfm.183.2020.02.21.10.34.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 21 Feb 2020 10:34:36 -0800 (PST) To: tuhs@minnie.tuhs.org References: <202002171520.01HFKqKi026749@tahoe.cs.Dartmouth.EDU> From: Heinz Lycklama Organization: Open Systems Technology Associates Message-ID: <5a37e3af-0226-8080-533a-e2428646ce7d@osta.com> Date: Fri, 21 Feb 2020 10:34:31 -0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.4.2 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="------------5B1D7A43F1126FCF0A9227AC" Content-Language: en-US Subject: Re: [TUHS] man Macro Package and pdfmark X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: heinz@osta.com Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" This is a multi-part message in MIME format. --------------5B1D7A43F1126FCF0A9227AC Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Not true. LSX was developed by yours truly during the mid-70's while I was at Bell Labs in Murray Hill. See BSTJ July/August 1978, page 2087-2101. It was developed to support some real-time features like contiguous files and asynchronous I/O. A number of groups in Bell Labs used LSX and added device drivers to support their dedicated applications. Western Electric (WE) was responsible for licensing the UNIX system at the time and only provided source code for the UNIX system for the PDP11 computer with an MMU for $20K. LSX source code was not included in this. I also developed (actually modified and wrote device drivers for) a version of the UNIX system that ran on the PDP11/10 computer, which also did not have an MMU. It could support up to four users. I believe that the source code for this system (Mini-UNIX) was provided to some universities by the UNIX Support group at Bell Labs. WE did not license this. I do not believe that WE ever considered licensing a binary version of LSX or the UNIX System to run on the IBM PC or any other microcomputer. WE only offered binary licenses later on, and then only for the PDP11 with an MMU first. In hindsight, a missed opportunity, but that's another story. Doug may be able to offer some insight into this as well. Thanks for asking, Heinz Lycklama On 2/21/2020 2:37 AM, Ed Bradford wrote: > I also worked with LSX - a stripped down version of Unix that required > no MMU. It worked on a PDP 11/03 and we delivered an LSX product to > the telco's based on LSX. My faulty memory tells me Mike Lesk created > LSX. Is that true? > > Did BTL/AT&T ever try to sell LSX to IBM for its 1981 intro of the IBM PC? > > Ed Bradford, BTL 1976-1983 > Columbus and Whippany --------------5B1D7A43F1126FCF0A9227AC Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit Not true. LSX was developed by yours truly during the mid-70's
while I was at Bell Labs in Murray Hill. See BSTJ July/August 1978,
page 2087-2101. It was developed to support some real-time
features like contiguous files and asynchronous I/O. A number
of groups in Bell Labs used LSX and added device drivers to
support their dedicated applications.

Western Electric (WE) was responsible for licensing the UNIX system
at the time and only provided source code for the UNIX system for
the PDP11 computer with an MMU for $20K. LSX source code
was not included in this.

I also developed (actually modified and wrote device drivers for)
a version of the UNIX system that ran on the PDP11/10 computer,
which also did not have an MMU. It could support up to four users.
I believe that the source code for this system (Mini-UNIX) was
provided to some universities by the UNIX Support group at
Bell Labs. WE did not license this.

I do not believe that WE ever considered licensing a binary
version of LSX or the UNIX System to run on the IBM PC or
any other microcomputer. WE only offered binary licenses
later on, and then only for the PDP11 with an MMU first.
In hindsight, a missed opportunity, but that's another story.

Doug may be able to offer some insight into this as well.

Thanks for asking,

Heinz Lycklama

On 2/21/2020 2:37 AM, Ed Bradford wrote:
I also worked with LSX - a stripped down version of Unix that required no MMU. It worked on a PDP 11/03 and we delivered an LSX product to the telco's based on LSX. My faulty memory tells me Mike Lesk created LSX. Is that true?

Did BTL/AT&T ever try to sell LSX to IBM for its 1981 intro of the IBM PC?

Ed Bradford, BTL 1976-1983
Columbus and Whippany

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