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Path: utzoo!henry
From: henry@utzoo.UUCP (Henry Spencer)
Newsgroups: net.micro.68k,net.micro.amiga,net.micro.atari16,net.micro.mac
Subject: Re: The Motorola 68030
Message-ID: <7186@utzoo.UUCP>
Date: Sat, 4-Oct-86 02:05:46 EDT
Article-I.D.: utzoo.7186
Posted: Sat Oct  4 02:05:46 1986
Date-Received: Sat, 4-Oct-86 02:05:46 EDT
References: <2270@gitpyr.UUCP>
Organization: U of Toronto Zoology
Lines: 12
Keywords: here we go again...

> ...  When going from a 68020 to a 68030, you will have to
> rewrite the os to take advantage of the memory management that the 68030
> provides...otherwise you just have a little faster 68020, much like you
> can use a 286 as a faster 8086.  How about if we compare apples to apples?

Okay, we'll compare apples to apples:  how's the 32-bit-mode code generator
for the 386 coming?  If you don't have that, you just have a little faster
80286.  Rewriting the code generator and recompiling everything strikes me
as rather more work than hacking up the MMU section of the kernel.

*Especially* since the 286->386 conversion is also going to mean hacking
up the MMU stuff to cope with 32-bit addresses.
-- 
				Henry Spencer @ U of Toronto Zoology
				{allegra,ihnp4,decvax,pyramid}!utzoo!henry