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- From: davidli@simvax.labmed.umn.edu
- Newsgroups: comp.sys.atari.st
- Subject: on the need for 'virtual memory'
- Message-ID: <C0r8vp.683@news2.cis.umn.edu>
- Date: 12 Jan 93 19:02:11 GMT
- Article-I.D.: news2.C0r8vp.683
- Sender: news@news2.cis.umn.edu (Usenet News Administration)
- Reply-To: davidli@simvax.labmed.umn.edu
- Organization: Health Computer Sciences, U of MN, Mpls
- Lines: 11
- Nntp-Posting-Host: lapis.labmed.umn.edu
-
- Can someone who knows the history of UNIX please comment on whether the
- early versions of UNIX 'required' virtual memory in order to work? My
- own impressions are that the PDP computers didn't have any virtual
- memory, and that most programs that were larger than memory consisted of
- a series of intelligent overlays. (My impression is partially formed by
- experience with UNIX 7.0 on a PDP-11/34, requiring a grand total of
- 10 megabytes of hard disk space, and the fact that one of the selling
- points of the VAX series of computers was the fact that they had virtual
- address space.)
-
- -- DPZ
-