Article View: comp.sys.atari.st
Article #24275Re: Forwarded message
From: Chuck McManis
Date: Mon, 05 Jan 1987 23:54
Date: Mon, 05 Jan 1987 23:54
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What Henry was probably referring to is the segment registers that the
80x86 family has. They offer a certain amount of code relocatability
that is unavailable on vanilla 68K machines. (Yes you can use "small
model" on the 68000 but you still have problems with the dynamic
loading of tasks) When properly written 8086 segments can be swapped
into and out of memory without the program knowing about it.
But I agree, multitasking doesn't imply an MMU. Look at either the Amiga
or OS-9 on the ST for examples.
The biggest problem of porting MINIX would be porting the C compiler,
since compiler design breaks down into two camps, the parser and the
code generator. You would literally have to rewrite half of the compiler
to port it.
--
--Chuck McManis
uucp: {anywhere}!sun!cmcmanis BIX: cmcmanis ARPAnet: cmcmanis@sun.com
These opinions are my own and no one elses, but you knew that didn't you.
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!lll-lcc!ames!amdahl!oliveb!sun!cmcmanis From: cmcmanis@sun.uucp (Chuck McManis) Newsgroups: comp.sys.atari.st Subject: Re: Forwarded message Message-ID: <10979@sun.uucp> Date: Mon, 5-Jan-87 18:54:16 EST Article-I.D.: sun.10979 Posted: Mon Jan 5 18:54:16 1987 Date-Received: Tue, 6-Jan-87 02:40:24 EST References: <8701022135.AA07189@ucbvax.Berkeley.EDU> <7472@utzoo.UUCP> <539@eneevax.UUCP> Organization: Sun Microsystems, Inc. Lines: 20 Summary: 8086 mmu