NAME

       vga_setwritepage - set the 64K SVGA page number

SYNOPSIS

       #include <vga.h>

       void vga_setwritepage(int page);

DESCRIPTION

       Usually  SVGA cards have more than the 64K memory which suffice for an ordinary VGA.  However, the memory
       window mapped at vga_getgraphmem(3) is only 64K bytes large.  vga_setwritepage() selects the page-th  64K
       memory chunk to be visible for writes at position vga_getgraphmem(3).

       vga_setreadpage(3)  allows  a different 64K memory chunk to be modified by reads from this memory window.
       This is a very useful feature for screen to screen pixmap copies. However, not all cards support this  in
       all  graphics  modes.  Check  vga_modeinfo(3) for availability. Esp. as this feature can also not be used
       when in background mode.

       Of course, this function must be used in conjunction with vga_setreadpage(3)  but  may  not  be  used  in
       conjunction with vga_setpage(3).

SEE ALSO

       svgalib(7),  vgagl(7), libvga.config(5), fun(6), vgatest(6), vga_getgraphmem(3), vga_claimvideomemory(3),
       vga_modeinfo(3) vga_setpage(3), vga_setreadpage(3), vga_setlinearaddressing(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.

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