fix132x43 man page on aLinux

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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
       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  LINES  environment	variable  is used to detect 43 or 44 line con‐
       soles.

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/	subdi‐
       rectory	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 make in the	utils/	subdi‐
       recty.  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),	restoretextmode(1),   runx(1),
       savetextmode(1), setmclk(1), textmode(1).

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.

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