NAME¶
vga_setdisplaystart - set the display start address
SYNOPSIS¶
#include <vga.h>
void vga_setdisplaystart(int a);
DESCRIPTION¶
Set the display start address to
a, where the address is the number of
pixels offset from the start of video memory, except for hicolor/truecolor
modes, which use a unit of 1 byte. Can be used for page-flipping and virtual
desktop scrolling. May not work properly for 16 color modes.
You should ensure that the memory displayed is actually available on the SVGA
card (query memory size with
vga_modeinfo(3)) and ensure that it is
saved by svgalib during console switches with
vga_claimvideomemory(3).
You may only set the bits of the display start address returned by
vga_modeinfo(3).
SEE ALSO¶
svgalib(7),
vgagl(7),
libvga.config(5),
vga_modeinfo(3),
vga_setlogicalwidth(3),
vga_claimvideomemory(3)
AUTHOR¶
This manual page was edited by Michael Weller
<eowmob@exp-math.uni-essen.de>. The exact source of the referenced
function 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.