From: Heinz Lycklama <heinz@osta.com>
To: tuhs@minnie.tuhs.org
Subject: Re: [TUHS] man Macro Package and pdfmark
Date: Fri, 21 Feb 2020 10:34:31 -0800 [thread overview]
Message-ID: <5a37e3af-0226-8080-533a-e2428646ce7d@osta.com> (raw)
In-Reply-To: <CAHTagfEdPiLH+a+sRupyzjvHtQeN8j_yZN8_Dv3_8JTLOzfLuA@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 1730 bytes --]
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
[-- Attachment #2: Type: text/html, Size: 2945 bytes --]
next prev parent reply other threads:[~2020-02-21 18:35 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-17 15:20 Doug McIlroy
2020-02-17 16:47 ` Clem Cole
2020-02-17 18:09 ` Thomas Paulsen
2020-02-17 18:39 ` Jon Steinhart
2020-02-17 21:16 ` Thomas Paulsen
2020-02-17 22:50 ` Thomas Paulsen
2020-02-17 23:22 ` Warner Losh
2020-02-18 0:56 ` Bakul Shah
2020-02-18 3:33 ` Dave Horsfall
2020-02-18 7:27 ` Thomas Paulsen
2020-02-18 0:03 ` Richard Salz
2020-02-18 0:17 ` Jon Steinhart
2020-02-18 0:54 ` Larry McVoy
2020-02-18 1:05 ` Bakul Shah
2020-02-18 7:40 ` Greg A. Woods
2020-02-18 7:45 ` arnold
2020-02-18 20:24 ` Greg A. Woods
2020-02-18 11:22 ` Rich Morin
2020-02-18 12:28 ` arnold
2020-02-18 12:49 ` U'll Be King of the Stars
2020-02-18 13:23 ` arnold
2020-02-18 15:11 ` Clem Cole
2020-02-18 15:28 ` arnold
2020-02-18 15:36 ` Larry McVoy
2020-02-18 15:43 ` Steve Nickolas
2020-02-18 15:52 ` Clem Cole
2020-02-18 16:40 ` Theodore Y. Ts'o
2020-02-18 18:39 ` Steve Nickolas
2020-02-18 21:26 ` Dave Horsfall
2020-02-18 21:29 ` Wesley Parish
2020-02-19 4:52 ` [TUHS] Open source or free software? (was: man Macro Package and pdfmark) Greg 'groggy' Lehey
2020-02-18 15:48 ` [TUHS] man Macro Package and pdfmark Clem Cole
2020-02-18 16:02 ` Chet Ramey
2020-02-18 16:28 ` Clem Cole
2020-02-18 17:49 ` Thomas Paulsen
2020-02-18 21:46 ` Rich Morin
2020-02-18 16:47 ` Henry Bent
2020-02-18 20:22 ` Greg A. Woods
2020-02-19 4:44 ` Larry McVoy
2020-02-19 18:01 ` Earl Baugh
2020-02-19 18:12 ` Emile Bye
2020-02-19 20:18 ` Michael Huff
2020-02-19 20:34 ` Jon Steinhart
2020-02-19 21:09 ` Henry Bent
2020-02-20 7:27 ` arnold
2020-02-20 7:43 ` Rich Morin
2020-02-20 13:15 ` Dan Cross
2020-02-20 16:23 ` Larry McVoy
2020-02-20 16:34 ` Arthur Krewat
2020-02-20 17:06 ` Al Kossow
2020-02-20 17:24 ` Bakul Shah
2020-02-20 17:48 ` Rich Morin
2020-02-20 20:10 ` Bakul Shah
2020-02-20 20:18 ` Rich Morin
2020-02-20 16:48 ` Nemo
2020-02-20 17:00 ` Larry McVoy
2020-02-20 19:16 ` Dave Horsfall
2020-02-20 23:45 ` Doug McIntyre
2020-02-21 0:18 ` Warner Losh
2020-02-21 1:14 ` Nemo Nusquam
2020-02-21 8:19 ` Thomas Paulsen
2020-02-21 8:17 ` Thomas Paulsen
2020-02-21 10:17 ` arnold
2020-02-21 10:37 ` Ed Bradford
2020-02-21 18:34 ` Heinz Lycklama [this message]
2020-02-21 18:59 ` Warner Losh
2020-02-21 21:10 ` Dave Horsfall
2020-02-21 21:46 ` David Barto
2020-02-22 6:48 ` Ed Bradford
2020-02-22 10:42 ` Al Kossow
2020-02-22 11:01 ` Ed Bradford
2020-02-22 16:38 ` Warner Losh
2020-02-22 18:11 ` arnold
2020-02-22 23:41 ` [TUHS] Mini-UNIX Warren Toomey
2020-02-22 11:08 ` [TUHS] man Macro Package and pdfmark Ed Bradford
2020-02-22 16:40 ` Warner Losh
2020-02-22 16:46 ` Clem Cole
2020-02-22 17:51 ` Heinz Lycklama
2020-02-17 18:55 Noel Chiappa
2020-02-17 20:13 ` Clem Cole
2020-02-17 21:06 ` CHARLES KESTER
2020-02-18 0:36 ` Dave Horsfall
2020-02-18 13:13 Don Hopkins
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5a37e3af-0226-8080-533a-e2428646ce7d@osta.com \
--to=heinz@osta.com \
--cc=tuhs@minnie.tuhs.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).