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dumpreg(1)		      Svgalib User Manual		    dumpreg(1)

NAME
       dumpreg - dump the state	of the card as the svgalib chipset driver sees
       it.

SYNOPSIS
       dumpreg
       dumpreg < /dev/ttyN

DESCRIPTION
       The  chipset  drivers  of  svgalib inquire the mode of the graphic card
       when the	application is started and restore it when the svgalib	appli-
       cation quits.  dumpreg prints this information to stdout.

       This  is	 useful	 for debugging or adding modes to a device driver. For
       example you can use Xfree86 to setup a  given  mode  timing,  then  run
       dumpreg	and  use  it's	stdout to make your chipset driver use exactly
       this timing.

       However,	the recent change of svgalib to	hunt an	own free virtual  con-
       sole  does  not	allow  this,  because  it  will	make Xfree86 return to
       textmode	first. You can avoid this by using the second form where N  is
       the  number of the virtual console on which Xfree86 runs	(usually 7) as
       root.

SEE ALSO
       svgalib(7), vgagl(7), libvga.config(5),	vga_dumpregs(3),  convfont(1),
       fix132x43(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-es-
       sen.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			    dumpreg(1)

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<https://man.freebsd.org/cgi/man.cgi?query=dumpreg&sektion=1&manpath=FreeBSD+Ports+14.3.quarterly>

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