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From: hamish@waikato.ac.nz
Newsgroups: comp.sys.amiga
Subject: Memory protection for all amiga's
Message-ID: <227.25ff6050@waikato.ac.nz>
Date: 14 Mar 90 20:28:48 GMT
Lines: 14

Putting an MMU into the amiga requires the addition of just one chip, the
68451 MMU. This is the 24/16 bit version of the 68851, and is designed to
be used as a peripheral to the 68000, or if you wish to add a 68010, it 
can be used in much the same manner as the 68020 and later, where the 
MMU is mapped into CPU space & doesn't take any memory away from the user
and is completely transparent. Adding a 68010 has the advantage that 
virtual memory is possible.

So a small board, a PAL and 1 or 2 chips make memory protection possible
on all members of the amiga family.

Hamish Marson.

 Disclaimer: This idea is all mine!