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From: Dan Cross <>
To: Clem Cole <>
Cc: Jonathan Gray <>,
	Computer Old Farts Followers <>
Subject: [COFF] Re: [TUHS] Re: project athena (was Re: Setting up an X Development Environment for Mac OS)
Date: Fri, 10 Feb 2023 12:19:25 -0500	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On Fri, Feb 10, 2023 at 10:44 AM Clem Cole <> wrote:
> On Fri, Feb 10, 2023 at 10:34 AM Dan Cross <> wrote:
>> If I recall correctly (and it's been a while...) csup, CVSup, et al
>> were based on `sup`, which was a file distribution tool somewhat like
>> `rdist`, which came from CMU. csup/cvsup was optimized for moving
>> source code deltas (a la CVS repositories) around. I recall a
>> graphical client written in Modula-3?
> Right -- ??maybe?? Bob Baron or one of the Mach guys did it  - used the DEC Modula-3 IIRC.

That sounds right for `sup`. I vaguely remember it being associated
with Coda, as well? I believe the BSDs used it to distribute source
code (in addition to or instead of anoncvs?) in the 90s.

It looks like CVSup was done by John Polstra in Modula-3. It was being
used for FreeBSD in at least 1996, but I don't know when they started
using it. It's mostly disappeared, but has a snapshot of
its old web site:

`csup` was a reimplementation in C (without the GUI part, I imagine)
because the Modula-3 dependency was a pain.

>> The SUPDUP protocol used by ITS hosts was a "Display Protocol" based
>> on TELNET:
> Exactly - popular with the LISP hackers.  I started to implement it in the CMU Distributed Front-End years ago but never finished it - I don't know if it was ever completed.

Oh yeah, I imagine it was implemented on Lisp machines, probably for
connecting to ITS. Lars, do you know?

        - Dan C.

  reply	other threads:[~2023-02-10 17:20 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <>
     [not found] ` <>
     [not found]   ` <>
     [not found]     ` <Y9GIus/>
     [not found]       ` <>
     [not found]         ` <>
2023-02-10  6:19           ` Lars Brinkhoff
     [not found]             ` <>
2023-02-10 10:12               ` Lars Brinkhoff
2023-02-10 15:25                 ` Warner Losh
2023-02-10 15:33                   ` Dan Cross
2023-02-10 15:44                     ` Clem Cole
2023-02-10 17:19                       ` Dan Cross [this message]
2023-02-10 18:33                         ` Lars Brinkhoff
2023-02-10 18:43                           ` Lars Brinkhoff
2023-02-10 18:44                         ` Warner Losh
2023-02-10 18:53                           ` Warner Losh
2023-02-10 18:21                     ` Lars Brinkhoff
2023-02-10 20:21                       ` Lars Brinkhoff
2023-02-10 18:34                     ` Warner Losh

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