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From: jss@mh3bc1.UUCP
Newsgroups: net.flame,net.unix-wizards
Subject: Re: Paging != Virtual Memory
Message-ID: <105@mh3bc1.UUCP>
Date: Tue, 22-Nov-83 13:45:44 EST
Article-I.D.: mh3bc1.105
Posted: Tue Nov 22 13:45:44 1983
Date-Received: Fri, 25-Nov-83 04:00:54 EST
References: <3960@umcp-cs.UUCP>, <633@cbosgd.UUCP>
Organization: Bell Labs, Murray Hill
Lines: 15

Some computers map logical addresses directly to physical
addresses some do not.  Noticing the latter possibility
was a major advance in the early days of computer science.
While for many purposes the detatils of the mapping are
significant the fundamental distinction is between
no map (or the identity map if you prefer) and a nontrivial
map.

I have always used "virtual memory" to indicate a nontrivial
map.  A question for those who want to reserve "virtual memory"
to describe particular maps.  Do you have a name for the
central concept?

Jerry Schwarz
BTL, Murray Hill