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fix132x43(1)                  Svgalib User Manual                 fix132x43(1)



NAME
       fix132x43  -  fix  problems  with certain (132 column) graphics 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 scan-
       lines). 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 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 distribu-
       tion. 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 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 mirrored 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 <eowmobATexp-math.de>. The exact source of the refer-
       enced 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.HanemaayerATinter.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.



Svgalib (>= 1.2.11)               2 Aug 1997                      fix132x43(1)