On Wednesday 19 December 2007 13:38, Fred Cisin wrote:
On Tue, 18 Dec 2007, Dave Dunfield wrote:
Turns out many of the cards I have support a
132x25 column video mode
which is laid out exactly the same as the 80 column modes except for
being 264 bytes per line instead of 160 (character and attribute pairs).
For my ATI cards mode 35 (23h) seems to work on most of them.
IIRC, there is also a byte in BIOS data segment 40h that identifies how
many characters per line, and another for number of lines.
MANY programs are so hard-wired to expect 80 x 25 at B000h or B800h, that
they border on unusable when you have any different configuration.
Depends on the software...
I started out with mono, never bothered doing much with CGA as the quality of
those monitors was just too poor to read much text on. With EGA and VGA I
always tried to put as much text on the screen as I could, which in practice
meant 43 or 50-line mode. [OT]Even now, when I boot my server, I kick it
into a 132x60 line mode.[/OT]
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