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Article #1574Re: Ask yourself these before you choosing a 32bit OS...
From: Kazimir Kylheku
Date: Thu, 24 Aug 1995 00:36
Date: Thu, 24 Aug 1995 00:36
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In article <id.__QM1.1Q3@nmti.com>, Peter da Silva <peter@nmti.com> wrote: >In article <41djjvINNjmn@keats.ugrad.cs.ubc.ca>, >Kazimir Kylheku <c2a192@ugrad.cs.ubc.ca> wrote: >> Are you sure about that? THe 640K limit stems from the fact that AT-bus >> devices have memory-mapped I/O in the upper 360K, as well as ROMs, etc. > >Funny. My Kaypro 2000 laptop had 768K of "low memory". But you had to >run Kaypro DOS to use it. I see what you are getting at. That meant that on the Kaypro, memory-mapped hardware areas started at C000:0000. Definitely not standard. Just think of all those programs under DOS that assume that your 80x25 display is located at either b000:0000 or b800:0000. -- Finger c2a192@keats.ugrad.cs.ubc.ca for PGP public key. Or contact one of the public key servers -- the key id is 0xD3C7995D.
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Path: arc1-ca.pugleaf.net!keats.ugrad.cs.ubc.ca!not-for-mail From: c2a192@ugrad.cs.ubc.ca (Kazimir Kylheku) Newsgroups: comp.sys.powerpc,comp.os.linux.advocacy,comp.sys.mac.advocacy,comp.os.os2.advocacy,comp.sys.amiga.advocacy,comp.sys.intel,alt.2600,comp.os.ms-windows.advocacy Subject: Re: Ask yourself these before you choosing a 32bit OS... Date: 23 Aug 1995 17:36:07 -0700 Organization: Computer Science, University of B.C., Vancouver, B.C., Canada Message-ID: <41ghhnINNkgd@keats.ugrad.cs.ubc.ca> References: <3vh2hc$9dd@falcon.ccs.uwo.ca> <809039446.1190@ksmith.com> <41djjvINNjmn@keats.ugrad.cs.ubc.ca> <id.__QM1.1Q3@nmti.com> NNTP-Posting-Host: keats.ugrad.cs.ubc.ca