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- Subject: Re: OS features
- Message-ID: <w96jjMD1A7aLz3@0dietmar.tomate.tng.oche.de>
- Date: Sat, 13 Jan 96 11:43:15 GMT
- Organization: Developer
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- From: DIETMAR@TOMATE.TNG.OCHE.DE (Dietmar Eilert)
-
- siren@dns.mikrobitti.fi (Janne Siren) wrote:
-
- JS> Olaf Barthel (olsen@sourcery.han.de) wrote:
- JS> : The reason for leaving out memory protection was that once the design was
- JS> : frozen it was very difficult to retrofit it into the design. Message passing
- JS>
- JS> Why not add some sort of a virtual machine (ala Windows 95, but better :-)
- JS> that would allow us to run old applications (if one went down, all would, but
-
- Adding a virtual Win3.1 environment to Win95/WinNT has been far less
- difficult than it would be to add one to a new AmigaOS since Win3.1 already
- forced applications to use an abstract memory allocation system (providing
- vmem). AmigaOS extremely depends on the underlying hardware, physical
- addresses and exclusive control of the chipset. There are no (or
- insufficient) abstraction levels to handle memory or the chipset. If there
- were abstraction levels those levels could be exchanged. The lack of
- abstraction levels made the AmigaOS fast and small but the OS design is
- pretty dirty if compared to say WinNT (OS core based on memory protection,
- multiple CPU's, virtual memory, preemptive multitasking). I'd suggest to
- build a completely new OS core and to provide a dual-boot option to boot
- the old OS.
-
- * In a random sampling of GoldED users, 100% said that they'd rather use
- GoldED than be publically flogged, eaten alive by pirhanas, OR watch
- SeaQuest DSV.
-
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