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Article #759

VGA PC: Multiple pages in Mode 13h?

#759
From: Jerry Shekhel
Date: Mon, 17 Aug 1992 17:34
16 lines
1591 bytes
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
bits determine the video plane, there's no way to specify the upper two
address bits, and I assume that they're always 00 in Chain4 Mode.  Is there
a way to change this?
--
+-------------------+-----------------------+--------------------------------+
| Jerry J. Shekhel  | Molecular Simulations | Time just fades the pages      |
| Drummers do it... | Inc.  Waltham, MA USA | in my book of memories.        |
|    ... In rhythm! |     (617) 890-2888    |              -- Guns N' Roses  |
+-------------------+-----------------------+--------------------------------+
|           ...! [ princeton mit-eddie bu sunne ] !polygen!jerry             |
|                            jerry@polygen.com                               |
+----------------------------------------------------------------------------+
Technical Details
Message-ID: <1992Aug17.173418.17990@ctr.columbia.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!caen!sol.ctr.columbia.edu!connection!jerry

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Newsgroups: rec.games.programmer
Path: arc1-ca.pugleaf.net!sparky!uunet!caen!sol.ctr.columbia.edu!connection!jerry
From: jerry@connection.prospect.com (Jerry Shekhel)
Subject: VGA PC: Multiple pages in Mode 13h?
Organization: Molecular Simulations, Inc.
Message-ID: <1992Aug17.173418.17990@ctr.columbia.edu>
Sender: news@ctr.columbia.edu (The Daily Lose)
Date: Mon, 17 Aug 1992 17:34:18 GMT
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X-Posted-Through: sol.ctr.columbia.edu
Lines: 16