Re: New RISC workstations / 88110 demise

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#972

From: Tero Nieminen
Date: Sat, 07 Nov 1992 12:15

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In article <ceynlZy00WAy810IZ5@andrew.cmu.edu> cs4w+@andrew.cmu.edu (Charles William Swiger) writes:

   "Unix emulation task"?  What are you referring to?  The Mach kernel does
   handle system traps (the functions described in "man 2 intro") for
   processes, exactly like any other kernel, and I don't see this changing
   under Mach 3.x.

Mach 3 is a true micro kernel, unlike the Mach 2 that is a traditional
monolithic kernel.

   Mach provides these functions because a standard unix
   kernel provides these functions; programs written for another unix
   machine work on the NeXT without modification because the Mach kernel
   provides the exactly same functionality.  This compatibility is one of
   the most important features of Mach.

Mach kernel is not actually designed to implement any particular OS. It
just happens that most often a BSD emulator in run on top of it. And it
is that emulator that provides the Unix features.
-- 
         Tero Nieminen                      DANGER!
         ttn@cs.tut.fi                   Computer Bytes!

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<1992Nov2.170741.2092@jhunix.hcf.jhu.edu> <Bx5Iwn.to.2@cs.cmu.edu> <1992Nov5.070604.2071@cubetech.com> <BxBCpM.65B.2@cs.cmu.edu> <ceynlZy00WAy810IZ5@andrew.cmu.edu>

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Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!news.funet.fi!news.cs.tut.fi!tut!ttn
From: ttn@cs.tut.fi (Tero Nieminen)
Newsgroups: comp.sys.next.hardware
Subject: Re: New RISC workstations / 88110 demise
Date: 7 Nov 92 12:15:43
Organization: Tampere Univ. of Technology, Finland.
Lines: 22
Distribution: world
Message-ID: <TTN.92Nov7121543@kivikkorastas.cs.tut.fi>
References: <1992Nov2.170741.2092@jhunix.hcf.jhu.edu> <Bx5Iwn.to.2@cs.cmu.edu>
 <1992Nov5.070604.2071@cubetech.com> <BxBCpM.65B.2@cs.cmu.edu>
 <ceynlZy00WAy810IZ5@andrew.cmu.edu>
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In-reply-to: cs4w+@andrew.cmu.edu's message of 6 Nov 92 17:47:49 GMT

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