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Article #771Re: VGA PC: Multiple pages in Mode 13h?
From: Tomi H Engdahl
Date: Tue, 18 Aug 1992 20:02
Date: Tue, 18 Aug 1992 20:02
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In article <1992Aug17.173418.17990@ctr.columbia.edu> jerry@connection.prospect.com (Jerry Shekhel) writes: >Hello. I'm very new to PC programming, and I'm wondering if it's possible >to have multiple pages in Mode 13h in a way that works on all VGA's. I can >see how I can start the display at any address, but I can't see a way of >writing to a different page in Chain4 mode. Since the lowest two address You can't do it in stadard Mode 13h. You have to go to tweaked VGA modes to do multiple pages. Look for Mode X (320x240 with 256 colors) from Dr Dobb's journal. Another possibility is Mode Y, which was explained in this newsgroup some time ago. -- Tomi.Engdahl@hut.fi "Don't force it; get a larger hammer" then@vipunen.hut.fi
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Newsgroups: rec.games.programmer Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!news.funet.fi!funic!nntp.hut.fi!nntp!then From: then@vipunen.hut.fi (Tomi H Engdahl) Subject: Re: VGA PC: Multiple pages in Mode 13h? In-Reply-To: jerry@connection.prospect.com's message of Mon, 17 Aug 1992 17:34:18 GMT Message-ID: <THEN.92Aug18200225@vipunen.hut.fi> Sender: usenet@nntp.hut.fi (Usenet pseudouser id) Nntp-Posting-Host: vipunen.hut.fi Organization: Helsinki University of Technology, Finland References: <1992Aug17.173418.17990@ctr.columbia.edu> Date: 18 Aug 92 20:02:25 Lines: 17