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- Path: sourcery.han.de!not-for-mail
- Newsgroups: comp.sys.amiga.misc
- References: <4csn1g$ibm@thebes.waikato.ac.nz>
- From: "Olaf Barthel" <olsen@sourcery.han.de>
- Date: Sun, 21 Jan 1996 16:54:44 +0100
- X-NewsReader: IntuiNews 1.3a (7.9.95)
- Subject: Re: OS features
- Message-ID: <13213501@sourcery.han.de>
-
- In Article <4csn1g$ibm@thebes.waikato.ac.nz>, Stephen B Hodge <sbh@cs.waikato.ac.nz> wrote:
- > Michael van Elst (mlelstv@serpens.rhein.de) wrote:
- >
- > : kinnunen@stekt.oulu.fi (Teijo Kinnunen) writes:
- > :
- > : >"New" programs (aware of memory protection) would each run in their own
- > : >protected memory spaces (with resource tracking, hopefully). They could
- > : >communicate with other processes only through new, safe OS calls (not by
- > : >sharing memory, as today).
- > :
- > : This basically means a completely new and incompatible OS and some kind
- > : of emulation for old programs. Needless to say that this will be limited
- > : and significantly slower for the emulated system.
- > :
- > : >There's no easy way to add MP to AmigaOS, but as far as I can think of,
- > : >the above method would allow some level of compatibility with old programs.
- > :
- > : I think we can do something better...
- >
- > I think the only way to go is to toss the OS completely. Now is the perfect
- > opportunity to come out with a killer OS the doesn't contain the artifacts
- > that the current OS has (eg OldOpenLibrary() et al). With the move to a
- > PowerPC platform much of the OS will need to be rewritten anyway, such as
- > Exec and Graphics, and since ideally it should all be PowerPC native I think
- > that it is better to start from scratch so that features such as memory
- > protection and RTG can be included.
-
- Do you really think so? The AmigaOS is not in such a bad state it would
- require a complete rewrite to make any further progress possible. You are
- underestimating the work, time and money such a task takes. As far as I can
- see the only OS development groups who start from scratch are either backed
- by an academic background and financed by government agencies (e.g. MACH at
- CMU) or are founded & funded by a group of companies (e.g. Talingent).
-
- > To do this, and retain compatibilty and also get a machine to the market as
- > fast as possible the current OS will need to be ported to PowerPC, but I
- > think it is pointless to try to add things such as memory protection to
- > it now. What I think AT should do is to port OS3.1 to PPC and then write
- > a new (largely incompatible) OS that resembles AmigaDOS but contains the
- > features that an OS is expected to have now.
-
- You are asking for too much too soon.
-
- --
- Home: Olaf Barthel, Brabeckstrasse 35, D-30559 Hannover
- Net: olsen@sourcery.han.de
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