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From: davids@well.UUCP (David Schachter)
Newsgroups: comp.arch,comp.sys.nsc.32k,comp.sys.intel,comp.sys.m68k
Subject: Re: Question:  on-chip or off-chip MMU?
Message-ID: <2942@well.UUCP>
Date: Sat, 25-Apr-87 14:14:28 EDT
Article-I.D.: well.2942
Posted: Sat Apr 25 14:14:28 1987
Date-Received: Sun, 26-Apr-87 23:19:38 EDT
References: <5635@shemp.UCLA.EDU> <122@motsj1.UUCP>
Reply-To: davids@well.UUCP (David Schachter)
Lines: 5
Xref: mnetor comp.arch:1103 comp.sys.nsc.32k:116 comp.sys.intel:201 comp.sys.m68k:412


Rich Goss of Motorola states the '286 and '386 MMUs are not compatible.  This
is incorrect.  The '386 MMU is a superset of the '286 MMU.  (In fact, it's
much better than the '286 MMU.)  Any code running on the '286 will run on the
'386 (unless you used the Intel-reserved fields in the '286 MMU descriptors!)