From: clemc@ccc.com (Clem Cole)
Subject: [TUHS] PDP-10 UNIX?
Date: Mon, 18 Sep 2017 09:50:50 -0400 [thread overview]
Message-ID: <CAC20D2O1_qteChioos=Kgt0aq1YCxpbNR7eAHW1PUWqox=LUKQ@mail.gmail.com> (raw)
In-Reply-To: <751d6686-0620-9a9a-9055-55538e913fa5@kilonet.net>
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 1464 bytes --]
On Sun, Sep 17, 2017 at 11:22 AM, Arthur Krewat <krewat at kilonet.net> wrote:
> I have a C compiler for TOPS-10 that I got off the Internet back in 1988.
> Still haven't messed around with it enough to get it to run, but ...
>
> There was a PDP-10 C compiler in the late 1970s, that was kicking around
CMU, MIT and Stanford which we used to write backup10 and and an
implementation of tar. IIRC, it was based on the the Ritchie front end
and was V6 in syntax (i.e. pre-V7 or typesetter C - aka 'White Book).
I've forgotten the rules of chars, but I remember you had to be careful.
I think it was 4 9-bit chars to transfer things (4*9=36 bits), but I think
I remember there were cases on output that it wanted to wash it through a
7-bit PDP-10 char (5*7+1 =36bits) which was the 'norm' for most languages
like SAIL, BLISS et al.
I did not mess with much, but that time, I was transitioning from the 10's
to UNIX by that time. I added support for the -20's dumper tapes to
backup10 which were almost but not quite the same. But that was the last I
messed with it. Mike Accetta and Fil Aliva (of CMU Mach fame) I remember
had their had in that subsystem, at one point. And of course Danny Klein
is always a good one from those days to ask too. I'll see if I can dig them
up and ask.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://minnie.tuhs.org/pipermail/tuhs/attachments/20170918/accf550f/attachment.html>
next prev parent reply other threads:[~2017-09-18 13:50 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-17 14:28 Arthur Krewat
2017-09-17 14:31 ` Warner Losh
2017-09-17 15:01 ` Lars Brinkhoff
2017-09-17 15:22 ` Arthur Krewat
2017-09-18 13:50 ` Clem Cole [this message]
2017-09-18 16:42 ` Arthur Krewat
2017-09-18 19:58 ` Lars Brinkhoff
2017-09-18 20:10 ` Clem Cole
2017-09-18 20:22 ` Lars Brinkhoff
2017-09-18 20:43 ` Clem cole
2017-09-19 9:06 ` Mutiny
2017-09-19 9:56 ` Lars Brinkhoff
2017-09-17 16:33 ` Warner Losh
[not found] <mailman.1031.1505666037.3779.tuhs@minnie.tuhs.org>
2017-09-18 2:34 ` Johnny Billquist
2017-09-18 15:30 ` Arthur Krewat
2017-09-18 16:46 ` Steve Johnson
2017-09-18 17:25 ` Clem Cole
2017-09-18 17:40 ` Larry McVoy
2017-09-18 20:08 ` Chris Torek
2017-09-18 17:24 Nelson H. F. Beebe
2017-09-18 18:10 ` Lars Brinkhoff
2017-09-20 4:55 ` Warner Losh
2017-09-18 21:14 Noel Chiappa
2017-09-19 6:46 ` Lars Brinkhoff
2017-09-20 18:40 Nelson H. F. Beebe
2017-09-24 18:29 ` arnold
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='CAC20D2O1_qteChioos=Kgt0aq1YCxpbNR7eAHW1PUWqox=LUKQ@mail.gmail.com' \
--to=clemc@ccc.com \
/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).