Article View: comp.lang.asm.x86
Article #200Re: Big Real Mode above 4Gb
From: Frank Kotler
Date: Sun, 08 Sep 2002 10:56
Date: Sun, 08 Sep 2002 10:56
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2245 bytes
MGMidget wrote: > I understand the basic principles of Big Real Mode where the selector limit > is set to 4Gb. Is there a way to have the base be at 4Gb and the limit at > 8Gb? Would this work, and what would the problems be? There is no OS > involved at the time I'm trying to execute this code. When you return to RM, addresses are calculated by segreg * 16 + offset again, so it wouldn't work. If it did, how would you address it? Best, Frank
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 114917,c9b261141e7752 X-Google-Attributes: gid114917,public X-Google-Thread: fdc9c,c9b261141e7752 X-Google-Attributes: gidfdc9c,public X-Google-ArrivalTime: 2002-09-08 05:17:24 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!newsfeed-west.nntpserver.com!hub1.meganetnews.com!nntpserver.com!telocity-west!TELOCITY!sn-xit-03!sn-xit-06!sn-post-01!supernews.com!corp.supernews.com!news.crayne.org!clax86!robomod!not-for-mail From: Frank Kotler <fbkotler@attbi.com> Newsgroups: comp.lang.asm.x86,intel.microprocessors.pentium_iii Subject: Re: Big Real Mode above 4Gb Approved: CLAX86 Moderators <ccrayne@crayne.org> Date: Sun, 8 Sep 2002 10:56:00 +0000 (UTC) Organization: N Message-ID: <3D7B1CC2.10203@attbi.com> Sender: clax86@odin.asgard References: <DPwe9.14205$6i4.1145514@newsread1.prod.itd.earthlink.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-CLAX86-Policy: http://www.pacificsites.com/~ccrayne/clax86.html X-CLAX86-Faq: http://www2.dgsys.com/~raymoon/x86faqs.html X-CLAX86-Info-1: Send submissions to comp-lang-asm-x86@moderators.isc.org X-CLAX86-Info-2: Send technical complaints to ccrayne@crayne.org X-CLAX86-Info-3: Send complaints about policy to ccrayne@crayne.org X-Comment: moderators do not necessarily agree or disagree with this article. User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.0.1) Gecko/20020815 X-Accept-Language: en-us, en X-MailScanner: Found to be clean X-SpamAssassin: not spam, (#) score=1.1, required 5, MISSING_HEADERS X-UIDL: 1$N"!NS5!!IXk"!@_*!! X-Complaints-To: abuse@supernews.com Lines: 14