Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!wuarchive!uunet!mcsun!tuvie!vmars!hp
From: hp@vmars.tuwien.ac.at (Peter Holzer)
Newsgroups: comp.os.minix
Subject: Re: PC Minix CC
Message-ID: <2364@tuvie.UUCP>
Date: 4 Mar 91 16:04:50 GMT
References: <46397@nigel.ee.udel.edu>
Sender: news@tuvie.UUCP
Lines: 21

HBO043%DJUKFA11.BITNET@cunyvm.cuny.edu (Christoph van Wuellen) writes:

>Oh, please no, PLEASE, *NO* 8086, *NO* 80286.

>Perhaps you find a sado-maso guy who will add a 8086 code generator to
>c68/c386. I have often said, the the INTEL processor line begins with
>the 80386 for me. The others are not even existent.

The problem is that the 386 starts up in the so-called ``real mode'',
in which it acts just like a 8086. The switch to protected mode
is done later. So you cannot recompile the whole kernel with a
386 compiler. You need a 8086 compiler, too, for the 2 or 3
C-files which are used before the switch is done (Maybe we could
move the switch into to an earlier point or even into shoelace,
so that all the C files of the kernel can be compiled with a 386
compiler, but I think Andi won't like that.
--
|    _  | Peter J. Holzer                       | Think of it   |
| |_|_) | Technical University Vienna           | as evolution  |
| | |   | Dept. for Real-Time Systems           | in action!    |
| __/   | hp@vmars.tuwien.ac.at                 |     Tony Rand |