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From: Brad Spencer <brad@anduin.eldar.org>
To: Dan Cross <crossd@gmail.com>
Cc: tuhs@minnie.tuhs.org
Subject: Re: [TUHS] AOS and IBM/RT [Re: Amdahl UTS, AIX/370, AIX/ESA
Date: Thu, 21 Nov 2019 08:07:00 -0500	[thread overview]
Message-ID: <xon8so9z8cr.fsf@anduin.eldar.org> (raw)
In-Reply-To: <CAEoi9W6Nwj-qMRNoC-bxdxuC7s6E1TSRo3dkzKMnzSxoheLm5g@mail.gmail.com> (message from Dan Cross on Thu, 21 Nov 2019 06:58:38 -0500)

Dan Cross <crossd@gmail.com> writes:

> On Thu, Nov 21, 2019, 1:33 AM Al Kossow <aek@bitsavers.org> wrote:
>
>>
>>
>> On 11/5/19 11:59 PM, SPC wrote:
>> >
>> >
>> > Is it AOS stuff saved and available (including source code)
>> > un some place on the Internet?
>>
>> It was, and may still be in the afs heirarchy
>> I'm not going to say where, or how complete what was there is
>> I also seem to remember it still sat on top of an AIX microkernel
>> and didn't go down to bare metal.
>>
>
> No, that's not true. AOS was basically 4.3BSD Tahoe plus NFS and it ran on
> bare RT hardware. There was source code available to universities, though
> as I recall some bits related to memory management were missing and
> distributed as object files. I gathered, at the time, this was due to some
> obscure intellectual property reasons. People later tried to Port e.g.
> 4.4BSD to aging RT hardware and found it challenging because the memory
> subsystem was so different.
>
> But anyway, there was no hypervisor involved.
>
>         - Dan C.

For a brief time a long time ago, I used a 4.3BSD based Mt. Xinu, MACH
microkernel, OS on the IBM-RT as an alternative to AOS.  Ran well
enough, but was disk and memory constrained.  We had source to much of
the system (or perhaps all of it, don't remember), but I seem to recall
that compiling it was a big pain.  Something like you had to use a
specific compiler (perhaps referred to as High C??  hc command perhaps)
to compile some of the source.  gcc had a backend for the ROMP
processor, but it had a hard time making usable binaries.  I think that
some variation of pcc was the usual compiler.  I remember it being
pretty stock 4.3BSD with NFS and minus YP/NIS.  We used them mostly as X
terminal workstations.




-- 
Brad Spencer - brad@anduin.eldar.org - KC8VKS - http://anduin.eldar.org

  reply	other threads:[~2019-11-21 13:28 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-03 21:05 [TUHS] " Kevin Bowling
2019-11-03 23:29 ` Dennis Boone
2019-11-04  0:06   ` Kevin Bowling
2019-11-04  1:29   ` Dennis Boone
2019-11-04  1:58     ` Kevin Bowling
2019-11-04  3:39 ` Gregg Levine
2019-11-04  4:49   ` Kevin Bowling
2019-11-04 15:32   ` Adam Thornton
2019-11-05 16:21   ` Ronald Natalie
2019-11-05 18:04     ` Kevin Bowling
2019-11-05 19:22       ` ron
2019-11-05 17:30   ` Clem Cole
2019-11-05 18:07     ` Kevin Bowling
2019-11-05 18:15       ` Clem Cole
2019-11-05 19:03       ` Christopher Browne
2019-11-05 19:12         ` Kevin Bowling
2019-11-05 19:26           ` SPC
2019-11-05 19:28             ` SPC
2019-11-05 20:26               ` Kevin Bowling
2019-11-05 20:10         ` Clem Cole
2019-11-05 20:42           ` Kevin Bowling
2019-11-05 21:11             ` Clem Cole
2019-11-05 22:11     ` [TUHS] one element of one of M factions of N companies [Re: " Charles H Sauer
2019-11-06  0:06       ` Theodore Y. Ts'o
2019-11-06  3:36         ` Charles H. Sauer
2019-11-06  7:59           ` [TUHS] AOS and IBM/RT " SPC
2019-11-06 15:51             ` Charles H Sauer
2019-11-07 22:40               ` Grant Taylor via TUHS
2019-11-08  4:39                 ` Jason Stevens
2019-11-21  6:26             ` Al Kossow
2019-11-21 11:58               ` Dan Cross
2019-11-21 13:07                 ` Brad Spencer [this message]
2019-11-21 14:19                   ` Dan Cross
2019-11-21 16:16                     ` Chet Ramey
2019-11-21 20:53                       ` Dan Cross
2019-11-21 16:43                     ` greg travis
2019-11-21 19:41                       ` arnold
2019-11-21 20:21                         ` Jon Steinhart
2019-11-21 17:33                   ` Charles H Sauer
2019-11-21 17:36                     ` Dan Cross
2019-11-21 18:11                     ` Brad Spencer
2019-11-21 17:29                 ` Charles H Sauer
2019-11-22 20:38                 ` Al Kossow
2019-11-06 20:28 Pat Barron
2019-11-06 20:31 Pat Barron
2019-11-21 19:53 Noel Chiappa
2019-11-21 20:08 ` Clem Cole
2019-11-23  4:40   ` Gregg Levine
2019-11-23 12:51     ` Clem Cole

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