Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!samsung!munnari.oz.au!kaukau.comp.vuw.ac.nz!virtue!hamish
From: hamish@waikato.ac.nz
Newsgroups: comp.sys.amiga
Subject: Re Memory protection for all amiga's
Message-ID: <248.26077b42@waikato.ac.nz>
Date: 21 Mar 90 00:01:53 GMT
Lines: 20



Yo! 
  Alex M.

 I wish to clarify something. The MMU doesn't necessarily have to provide
seperate address spaces for each task. It can provide simple write protection
for memory. This would enable code segments to be write protected and even
local data segments (pages) that didn't have to be read by other tasks.

The code segments could be always write protected & write protection turned
off on the data for the currently running task.

  Look Ma...   Memory Protection.

When the MMU is reset it provides 1 mapping ie logical = physical. No write
protection at all. Keep the 1=1 & add write protection.


Hamish Marson.