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From: tim@ISM780B.UUCP
Newsgroups: net.micro.amiga
Subject: Re: Re: Memory Management w/o MMU"
Message-ID: <39700009@ISM780B.UUCP>
Date: Tue, 26-Nov-85 12:38:00 EST
Article-I.D.: ISM780B.39700009
Posted: Tue Nov 26 12:38:00 1985
Date-Received: Fri, 29-Nov-85 08:55:40 EST
References: <371@sdcc13.UUCP>
Lines: 17
Nf-ID: #R:sdcc13:-37100:ISM780B:39700009:000:555
Nf-From: ISM780B!tim    Nov 26 12:38:00 1985


> GET THIS THRU YOUR HEADS OR TAKE AN OPERATING SYSTEMS CLASS:
>
> THE BARE MINIMUM NEEDED FOR MULTITASKING ARE PROCESSOR
> INTERRUPTS OCCURING AT INTERVALS, AND AN INTERRUPT HANDLER.

But it isn't SAFE to do it without an MMU!  I want to be able to
run a random C program and not have to worry about crashing the
damn machine!

The MMU does not have to be fancy.  A simple MMU that divides the
address space of a process into, say, 256 equal size pages would
be fine.  This is simple to build.

						Tim Smith
						ihnp4!cithep!tim
						ima!is780!tim