From: Paul Ruizendaal <pnr@planet.nl>
To: "tuhs@tuhs.org" <tuhs@tuhs.org>
Subject: [TUHS] Re: On the uniqueness of DMR's C compiler
Date: Fri, 31 May 2024 14:00:55 +0200 [thread overview]
Message-ID: <4CB7B6B4-DF24-43EE-91F2-0C1CCBEB91E3@planet.nl> (raw)
In-Reply-To: <CAC20D2N6PqeBHw3vS=K-5O16do8qe7cZ6p6NE8=tq67k45sBrg@mail.gmail.com>
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I’m further looking into BCPL / B / C family compilers on 16-bit mini-computers prior to 1979.
Lot’s of interesting stuff. BCPL was extended with structures at least twice and plenty struggle with (un)scaled pointers. It seems that the Nova was a much easier target than the PDP-11, with a simpler code generator sufficing to generate quality code. I’ll report more fully when I’m further along with my review.
> On May 8, 2024, at 5:51 PM, Clem Cole <clemc@ccc.com> wrote:
>
> IIRC, Mike Malcom and the team built a true B compiler so they could develop Thoth. As the 11/40 was one of the original Thoth target systems, I would have expected that to exist, but I have never used it.
Yes, they did. I’m working through the various papers on Thoth and the Eh / Zed compilers (essentially B with tweaks). I’ve requested pdf’s of two theses that are only on micro-fiche from the Uni of Waterloo library, hopefully this is possible. The original target machines were Honeywell 6060, DG Nova, Microdata 1600/30 and TI-990. The latter is close enough to a PDP-11. This compiler is from 1976.
I’ve browsed around for surviving Thoth source code, but it would seem to be lost. Does anyone know of surviving Thoth bits?
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next prev parent reply other threads:[~2024-05-31 12:01 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-07 20:59 [TUHS] " Paul Ruizendaal
2024-05-07 22:07 ` [TUHS] " Rob Pike
2024-05-08 9:35 ` Paul Ruizendaal
2024-05-08 13:12 ` Rob Pike
2024-05-08 15:51 ` Clem Cole
2024-05-08 16:07 ` Jon Forrest
2024-05-08 17:49 ` Tom Perrine
2024-05-08 17:05 ` Adam Sampson
2024-05-08 17:45 ` Al Kossow
2024-05-08 18:12 ` Clem Cole
2024-05-08 18:12 ` Clem Cole
2024-05-09 1:27 ` Lawrence Stewart
2024-05-31 12:00 ` Paul Ruizendaal [this message]
2024-05-31 12:21 ` Peter Yardley
2024-05-08 11:09 ` Michael Kjörling
2024-05-09 20:40 ` Paul Ruizendaal via TUHS
2024-05-09 20:57 ` Al Kossow
2024-05-08 18:29 Douglas McIlroy
2024-05-10 17:28 ` Paul Winalski
2024-05-11 9:16 ` Ralph Corderoy
2024-05-11 13:42 ` G. Branden Robinson
[not found] <171519201646.4052234.694570138790187562@minnie.tuhs.org>
2024-05-09 3:39 ` Paul McJones
2024-05-09 3:46 ` Warner Losh
[not found] <171535904627.4052234.5321502833323676423@minnie.tuhs.org>
2024-05-10 18:55 ` Paul McJones
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