fix132x43(1)
NAME
fix132x43 - fix problems with certain (132 column) graph
ics modes dump the state of the card as the svgalib
chipset driver sees it.
SYNOPSIS
fix132x43 options
DESCRIPTION
This program tries to fix problems with extended textmodes
on some cards. The problem is that for 132x43 textmode,
some BIOS's set the vertical display end register to 349
(350), instead of 343 (344 = 3 * 8 scanlines). Because in
Linux textmode video memory is usually filled with old
text that has already scrolled away (this includes the
area below the 43rd textmode line, which changes when the
console scrolls), the top half of a constantly changing
irrelevant text line is visible at the bottom of the
screen, which is very annoying.
This program sets the VGA Vertical Display End register to
the proper value.
This problem is at least present in the BIOS of most Cir
rus Logic 542x based cards, and some WD90C03x based cards.
The LINES environment variable is used to detect 43 or 44
line consoles.
OPTIONS
You have to specify exactly one of the following options:
- -f Fix problem of annoying changing line of text at
- bottom of screen.
- -v Switch to 9 line characters (400 line frame, 70
- Hz).
- -w Switch to 11 line characters (480 line frame, 60
- Hz).
- fix132x43 does not usually provide this option but it can be enabled in the source of fix132x43.
- -r Switch to 8 line characters again (350 line frame,
- 70 Hz).
- This utility is part of svgalib and can be found in the
utils/ subdirectory of the original svgalib distribution. However, it is not installed by default, s.t. it is
unclear where you can find it if your svgalib was install
linux distribution. - In case of any such problem, simply get an svgalib distri
bution from the net. You don't need to install it. Just
make in the utils/ subdirecty. As of this writing, svgalib-1.2.12.tar.gz is the latest version and can be retrieved by ftp from sunsite.unc.edu at /pub/Linux/libs/graphics and tsx-11.mit.edu at /pub/linux/sources/libs which will most probably be mir rored by a site close to you.
SEE ALSO
svgalib(7), vgagl(7), libvga.config(5), convfont(1),
dumpreg(1), restorefont(1), restorepalette(1), restore
textmode(1), runx(1), savetextmode(1), setmclk(1),
textmode(1).
AUTHOR
This manual page was edited by Michael Weller <eowmob@expmath.uni-essen.de>. The exact source of the referenced
utility as well as of the original documentation is
unknown.
It is very likely that both are at least to some extent
are due to Harm Hanemaayer <H.Hanemaayer@inter.nl.net>.
- Occasionally this might be wrong. I hereby asked to be
excused by the original author and will happily accept any
additions or corrections to this first version of the
svgalib manual.