vga_waitretrace man page on aLinux

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vga_waitretrace(3)	      Svgalib User Manual	    vga_waitretrace(3)

NAME
       vga_waitretrace - wait for vertical retrace.

SYNOPSIS
       #include <vga.h>

       void vga_waitretrace(void);

DESCRIPTION
       Wait  for  vertical  retrace, that is when the video beam goes dark and
       returns from the bottom line to the top	line.  Useful  to  synchronize
       animation with monitor refresh.

       However,	 Linux	is  a  multiuser  OS, thus some time might have passed
       already when the function returns. Also, not all cards support this  in
       all modes (or with more or less good results).

SEE ALSO
       svgalib(7), vgagl(7), libvga.config(5), scrolltest(6),

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.

Svgalib (>= 1.2.11)		 27 July 1997		    vga_waitretrace(3)
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