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From: mark@cbosgd.UUCP
Newsgroups: net.flame,net.unix-wizards
Subject: Re: Paging != Virtual Memory
Message-ID: <633@cbosgd.UUCP>
Date: Mon, 21-Nov-83 22:52:55 EST
Article-I.D.: cbosgd.633
Posted: Mon Nov 21 22:52:55 1983
Date-Received: Wed, 23-Nov-83 04:48:42 EST
References: <3960@umcp-cs.UUCP>
Organization: AT&T Bell Laboratories, Columbus
Lines: 12

I normally interpret "virtual memory" to mean that you can have more
"memory" in a user process (transparently to the process) than there
is physical memory on the machine.  Games with overlays do not count
since they are not completely transparent to the process.

This does not imply paging, as there are other implementations (notably
segmentation.)  However, paging is probably the most popular
implementation of virtual memory.

That stuff you get out of BTL UNIX is perhaps best called "memory
management", although there are implementations of System III or
V from outside vendors that page.