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To: Clem Cole <clemc@ccc.com>
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Subject: Re: [TUHS] Old 386 Unix Versions, was: Re: PCC for the i386
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On Jul 17, 2019, at 7:34 AM, Clem Cole <clemc@ccc.com> wrote:
> On Wed, Jul 17, 2019 at 5:28 AM Arrigo Triulzi =
<arrigo@alchemistowl.org> wrote:=20
> > For example there was Bull=E2=80=99s Chorus which I seem to recall =
was based on Mach or a competing microkernel (it was a very long time =
ago and I used it for no mare than about two hours..).
> Close, not quite.  Contemporaries but not the same.
>=20
> Chorus was a C++ rewrite of Gien's Pascal based 'SOL' systems [Gien M. =
(1983). =E2=80=9CThe SOL Operating System=E2=80=9D, USENIX Association, =
1983, Proceedings of the Summer =E2=80=9883 USENIX Conference, Toronto, =
Canada, July, 1983, Pages 75-78.]

A good paper on Chorus:
=
https://pdfs.semanticscholar.org/eab3/b28bebdc202d9c5e2354731bebadf0872aac=
.pdf

Apparently Chorus was not "unix" until the SOL team joined them in 1984!
Its nucleus seem very much like a microkernel.