92 lines
2.9 KiB
Groff
92 lines
2.9 KiB
Groff
|
.TH fix132x43 1 "2 Aug 1997" "Svgalib (>= 1.2.11)" "Svgalib User Manual"
|
||
|
|
.SH NAME
|
||
|
|
fix132x43 \- fix problems with certain (132 column) graphics modes
|
||
|
|
dump the state of the card as the svgalib chipset driver sees it.
|
||
|
|
.SH SYNOPSIS
|
||
|
|
|
||
|
|
.BI fix132x43 " options"
|
||
|
|
|
||
|
|
.SH 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 Cirrus Logic 542x based cards, and
|
||
|
|
some WD90C03x based cards.
|
||
|
|
|
||
|
|
The
|
||
|
|
.B LINES
|
||
|
|
environment variable is used to detect 43 or 44 line consoles.
|
||
|
|
|
||
|
|
.SH OPTIONS
|
||
|
|
You have to specify exactly one of the following options:
|
||
|
|
.TP
|
||
|
|
.B -f
|
||
|
|
Fix problem of annoying changing line of text at bottom of screen.
|
||
|
|
.TP
|
||
|
|
.B -v
|
||
|
|
Switch to 9 line characters (400 line frame, 70 Hz).
|
||
|
|
.TP
|
||
|
|
.B -w
|
||
|
|
Switch to 11 line characters (480 line frame, 60 Hz).
|
||
|
|
|
||
|
|
.B fix132x43
|
||
|
|
does not usually provide this option but it can be enabled in the source of
|
||
|
|
.BR fix132x43.
|
||
|
|
|
||
|
|
.TP
|
||
|
|
.B -r
|
||
|
|
Switch to 8 line characters again (350 line frame, 70 Hz).
|
||
|
|
.PP
|
||
|
|
This utility is part of svgalib and can be found in the
|
||
|
|
.I 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 distribution from the net. You
|
||
|
|
don't need to install it. Just
|
||
|
|
.B make
|
||
|
|
in the
|
||
|
|
.I utils/
|
||
|
|
subdirecty. As of this writing,
|
||
|
|
.I svgalib-1.2.12.tar.gz
|
||
|
|
is the latest version and can be retrieved by ftp from
|
||
|
|
.IR "sunsite.unc.edu" " at " "/pub/Linux/libs/graphics"
|
||
|
|
and
|
||
|
|
.IR "tsx-11.mit.edu" " at " "/pub/linux/sources/libs"
|
||
|
|
which will most probably be mirrored by a site close to you.
|
||
|
|
|
||
|
|
.SH SEE ALSO
|
||
|
|
|
||
|
|
.BR svgalib (7),
|
||
|
|
.BR vgagl (7),
|
||
|
|
.BR libvga.config (5),
|
||
|
|
.BR convfont (1),
|
||
|
|
.BR dumpreg (1),
|
||
|
|
.BR restorefont (1),
|
||
|
|
.BR restorepalette (1),
|
||
|
|
.BR restoretextmode (1),
|
||
|
|
.BR runx (1),
|
||
|
|
.BR savetextmode (1),
|
||
|
|
.BR setmclk (1),
|
||
|
|
.BR textmode (1).
|
||
|
|
|
||
|
|
.SH AUTHOR
|
||
|
|
|
||
|
|
This manual page was edited by Michael Weller <eowmob@exp-math.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.
|