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From: dca@edison.UUCP (David C. Albrecht)
Newsgroups: net.micro.amiga
Subject: Re: Re: Memory Management w/o MMU"
Message-ID: <618@edison.UUCP>
Date: Wed, 27-Nov-85 10:47:07 EST
Article-I.D.: edison.618
Posted: Wed Nov 27 10:47:07 1985
Date-Received: Sat, 30-Nov-85 01:09:04 EST
References: <370@caip.RUTGERS.EDU> <371@sdcc13.UUCP>
Organization: General Electric Company, Charlottesville, VA
Lines: 23

> You know, I am getting sick of all these 'how do you do
> multi-tasking without an MMU' questions.
> 
> 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.
> 
> 
> Larry J. McCaughey

This is true but, it is also like saying all you need to make a fire
is two wooden sticks.  It is unfortunate with all its sophisticated
hardware that the amiga didn't use a system that would provide inter-task
protection and I certainly wouldn't have complained about virtual memory.
Can't say as I blame them, however, virtual memory hasn't made a big
splash in personal computers, the lack of multi-tasking operating
systems in personal computers has not educated very many of their
users in the difficulties of multi-task debugging, and
the 68k series MMU isn't supposed
to be too quick anyway.

David Albrecht