NAME

       vga_setmodeX - try to set Mode X-like memory organization

SYNOPSIS

       #include <vga.h>

       void vga_setmodeX(void);

DESCRIPTION

       Try  to  enable  Mode  X-like  memory  organization  for  256 color modes using up to 256K of memory like
       320x200x256 and 640x400x256.

       Modes like 320x240x256 etc. are Mode X-like by default.  vga_modeinfo(3) lists which modes  have  Mode  X
       memory layout.

       A  mode  X like memory layout means that memory is organized in four pages (set_page(3)) and that the top
       most pixel 0,1,2,3 are the first pixel in pages 0,1,2,3. Pixels 4,5,6,7 are than  the  second  pixels  in
       pages 0,1,2,3.

       The  other, packed pixel, mode will have pixel 0,1,2,3 as pixel 0,1,2,3 in page 0 and so on. It will only
       use the next pages if the size of the first 64K page is exceeded. Most SVGA 256  color  modes  work  this
       way.

       This is not guaranteed to work. Probably a new mode should be defined for planar 320x200x256.

SEE ALSO

       svgalib(7), vgagl(7), libvga.config(5), vgatest(6), vga_getmodeinfo(3), vga_setmode(3), vga_setpage(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_setmodeX(3)