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- Xref: sparky comp.os.coherent:3338 comp.os.minix:3789
- Newsgroups: comp.os.coherent,comp.os.minix
- Path: sparky!uunet!email!hp
- From: hp@vmars.tuwien.ac.at (Peter Holzer)
- Subject: Re: OS compare (Unix/clone)
- Message-ID: <1992Jul29.122847.22126@email.tuwien.ac.at>
- Sender: news@email.tuwien.ac.at
- Nntp-Posting-Host: quasi.vmars.tuwien.ac.at
- Organization: Technical University Vienna, Dept. for Realtime Systems, AUSTRIA
- References: <1992Jul24.001255.13675@csx.cciw.ca> <michaelv.711988050@help.cc.iastate.edu> <PETRI.VIRKKULA.92Jul27231025@vipunen.hut.fi> <1992Jul28.154817.5839@mtu.edu>
- Date: Wed, 29 Jul 1992 12:28:47 GMT
- Lines: 21
-
- kwfriber@mtu.edu (Kenberg Frieth) writes:
-
- >Also,
- >[the 286] does not support virtual memory directly (although, one could probably
- >do it in software).
-
- How do you define `virtual memory'? The 286 does not have paging, but
- segmentation is a form of virtual memory as well.
-
- > The 286 does have some memory protection, and does
- >have protection levels for some instructions.
-
- I had the impression that protection is very similar in the 286 and the
- 386. The latter just added page-level protection and the IO permission
- maps.
-
- --
- | _ | Peter J. Holzer | Think of it |
- | |_|_) | Technical University Vienna | as evolution |
- | | | | Dept. for Real-Time Systems | in action! |
- | __/ | hp@vmars.tuwien.ac.at | Tony Rand |
-