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From: tim@acich.UUCP (Tim Lowe)
Newsgroups: comp.sys.ibm.pc,comp.graphics
Subject: VGA text mode problem, NEED HELP!
Message-ID: <277@acich.UUCP>
Date: Thu, 8-Oct-87 13:46:06 EDT
Article-I.D.: acich.277
Posted: Thu Oct  8 13:46:06 1987
Date-Received: Sun, 11-Oct-87 10:03:01 EDT
Organization: Automated Concepts, Inc. - Chicago
Lines: 37
Keywords: VGA, Text Mode Character Codes 0xC0-0xDF
Xref: mnetor comp.sys.ibm.pc:8840 comp.graphics:1239



Here is a question concerning IBM's VGA in text mode:

Character generation appears to be done using a
text cell of 16 rows by 9 columns, but uses a character
generator table consisting of 16 byte entries for
each character.  The ninth column is blank except
for character codes 0xC0 through 0xDF, for which it
is a copy of the eighth column.

This is different from EGA text mode, which uses
a 14 row by 8 column text cell.

The question:

Is there any way to get text-mode operation out of
the VGA with programmable character sets using an
8-column text cell on the screen?

Or, is there a way to enable replication of column 8
into column 9 in the present VGA text mode for character
codes outside the range 0xC0-0xDF?

I can't seem to get my hands on a VGA Tech Ref. (I'm begining
to wonder if such an animal exists.

Hal Snyder
Automated Concepts Inc.
respond to: Tim L Lowe
	    UUCP: ..ihnp4!acich!tim
	    PSTN: 1-312-346-8640
-- 
Tim L Lowe
Automated Concepts Inc.
UUCP ..ihnp4!acich!{utim}!tim
PSTN: 1-312-346-8640