From: uch024@zx1.Darkcrystal.Cyberspace (Lothar Koniczek)
Subject: Re: Chorus is not an OS based on Mach
Reply-To: uch024@zx1.hrz.uni-dortmund.de
Organization: University of Dortmund (Germany), Department of Chemistry
X-Newsreader: Tin 1.1 PL5
Distribution: comp
Date: Mon, 14 Sep 1992 10:45:57 GMT

Fabien Collin (fabien@sun2.cern.ch) wrote:
: Lothar Koniczek	writes (msg 2139):
: > Well, i already heard about works on impementing a UNIX-like System
: > with a MACH-Kernel on transputers. The system was called CHORUS.
: 
: CHORUS is NOT an OS based on Mach !
: CHORUS is a real-time microkernel written by Chorus Systemes (Paris).
: It has the same features than Mach.
: 
: Chorus/Mix is the Unix Multi-server running on top of the micro-kernel. There are
: different versions of the server (BSD, SYS VR4).
: 
: At CERN, a group is porting Chorus and Chorus/Mix to the T800 and T9000
: transputers (Harmony project).
: Chorus is used in a distributed operating system course made at the university
: of NANCY (France) by Francois Schwaab (schwaab@loria.fr). I'm in fact a student coming from this university.
: It is used in the industry too : Alcatel Business System (Strasbourg, France)
: use the Chorus microkernel in its telecommunication products.
: 
: Chorus has a few interresting features not present in mach (real-time,
: supervisor actors) but many theorical features are not yet implemented 
: (Kernel 3.3 lacks port migration, remote actors and threads creation,
: region migration, etc...)
: 
: Does anybody know if the Chorus microkernel 3.4 has all these interresting features ?
: Is there a chorus newsgroup ?
: Does anybody use Chorus (any types of machines) (industry, research, university)?
: 
: Please reply by email.
: 
: 							Fabien 
: -- 
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YES YES YES
You're all right! CHORUS has no MACH-microkernel!
There has been some sort of misunderstanding! :-(
Therefore i withdraw all i have posted about CHORUS.

But it's true that one can get information about CHORUS at opera.chorus.fr.

But what a nice start changing the discussion to CHORUS.
From those scripts at opera i see that there has been an implementation
of CHORUS for T9000 (is this true or not????).
But then, how's the porting of CHORUS for T800 going?
What will be that version like?
When will it be possible getting CHORUS for transputers?
What will it cost? (Or will there be any possibility becoming
a Beta-tester for CHORUS??)

I will be glad about any information concering CHORUS.

                                      Thanks to Fabien for the correction
                                            Lothar



  - As someone once said: "There is always one more bug."


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Lothar Koniczek			|Internet: uch024@zx1.HRZ.Uni-Dortmund.de
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