Provided by: libsvga1-dev_1.4.3-27ubuntu1_i386 bug


       vga_waitretrace - wait for vertical retrace.


       #include <vga.h>

       void vga_waitretrace(void);


       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).


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


       This  manual  page  was  edited by Michael Weller <eowmob@exp-math.uni->. 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 <>.

       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.