redhat man page for dumpreg

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 console 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-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                                                          dumpreg(1)