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Article #1072

Re: Mach vs. NT?

#1072
From: Edward Jung
Date: Sun, 13 Dec 1992 10:23
39 lines
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Some facts to clear up some misconceptions:

1. NT now stands for "New Technology". It did not originally
   stand for "New Technology", but what it used to stand for
   had nothing to do with VMS-. Dave Cutler, the software
   "father" of VMS and DEC (as well as lesser-known projects),
   is the chief architect for NT.

2. The researcher in charge of the Mach project, Rick Rashid
   while at Carnegie-Mellon University, currently is the
   Director of Research at Microsoft. A number of people
   involved in Mach at CMU are in the research group. Neither
   Rick nor his group has been directly involved in NT,
   although they have provided feedback. They arrived at
   Microsoft well after Cutler's team was in place.

3. NT is a micro-kernel architecture with a small object
   manager in its executive. One big difference between
   the Mach and NT architectures is the use of the port
   abstraction in Mach, which NT does not have.

4. The product "Windows 3.1/NT" is the NT micro-kernel
   hosting a number of user-level subsystems including
   a 32-bit and 16-bit Windows API, and running on a
   variety of CPU architectures and SMP machines.

5. A nice but seldom-described feature of NT is its
   definition of the Hardware Abstraction Layer (HAL),
   while allows significant innovation on the part of
   hardware vendors without requiring software changes
   in the NT kernel.

6. Windows 3.1/NT is an unreleased product. An essentially
   unrestricted developer's release shipped some time ago.


--
Edward Jung, Software Architect     edwardj@microsoft.com
Advanced Systems, Microsoft Corp.
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Message-ID: <1992Dec13.102359.27514@microsoft.com>
Path: arc1-ca.pugleaf.net!sparky!uunet!microsoft!hexnut!edwardj
References: <Bz0vGv.38x@eis.calstate.edu> <J8DNVB1w165w@bluemoon.use.com>

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Newsgroups: comp.os.mach
Path: arc1-ca.pugleaf.net!sparky!uunet!microsoft!hexnut!edwardj
From: edwardj@microsoft.com (Edward Jung)
Subject: Re: Mach vs. NT?
Message-ID: <1992Dec13.102359.27514@microsoft.com>
Date: 13 Dec 92 10:23:59 GMT
Organization: Strategy Division, Microsoft Corp.
References: <Bz0vGv.38x@eis.calstate.edu> <J8DNVB1w165w@bluemoon.use.com>
Lines: 39