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Int 10h, 00h            Set Video Mode

    Sets the video mode.

        Entry   AH = 00h
                AL = Video mode

        Return  Nothing


  On the EGA, MCGA, and VGA, the display memory is not erased by a
  mode set if the high bit of AL is set.


  Host memory affected by a mode set:
        0040h:0049h     Current video mode
        0040h:004Ah     No. of columns on screen
        0040h:004Ch     Length of active screen buffer
        0040h:004Eh     Start offset of current display page
        0040h:0050h     Cursor positions
        0040h:0060h     Cursor mode
        0040h:0062h     Current display page
        0040h:0063h     Base host address of port
        0040h:0065h     Current mode
        0040h:0066h     Current color
        0040h:0084h     No. of character rows

  --------------------------------------------------------------------------
         Table of standard text and graphics video modes

    Mode   Text   Box    Pixel   Colors  No.  Buffer System/
  no. type resol  size resolution       pages  addr  adapter
  00h  T   40x25  8x8   320x200  16gray    8   B800  CGA,PCjr
   0*  T   40x25  8x14  320x350  16gray    8   B800  EGA
       T   40x25  8x16  320x400   16       8   B800  MCGA
   0+  T   40x25  9x16  360x400   16       8   B800  VGA
  01h  T   40x25  8x8   320x200   16       8   B800  CGA,PCjr
   1*  T   40x25  8x14  320x350   16       8   B800  EGA
       T   40x25  8x16  320x400   16       8   B800  MCGA
   1+  T   40x25  9x16  360x400   16       8   B800  VGA
  02h  T   80x25  8x8   640x200  16gray    4   B800  CGA,PCjr
   2*  T   80x25  8x14  640x350  16gray    8   B800  EGA
       T   80x25  8x16  640x400   16       8   B800  MCGA
   2+  T   80x25  9x16  720x400   16       8   B800  VGA
  03h  T   80x25  8x8   640x200   16       4   B800  CGA,PCjr
   3*  T   80x25  8x14  640x350   16/64    8   B800  EGA
       T   80x25  8x16  640x400   16       8   B800  MCGA
   3+  T   80x25  9x16  720x400   16       8   B800  VGA
  04h  G   40x25  8x8   320x200    4       1   B800  CGA,PCjr,EGA,MCGA,VGA
  05h  G   40x25  8x8   320x200   4gray    1   B800  CGA,PCjr,EGA
       G   40x25  8x8   320x200    4       1   B800  MCGA,VGA
  06h  G   80x25  8x8   640x200    2       1   B800  CGA,PCjr,EGA,MCGA,VGA
  07h  T   80x25  9x14  720x350  mono     var  B000  MDA,Hercules,EGA
   7+  T   80x25  9x16  720x400  mono      8   B000  VGA
  08h  G   20x25  8x8   160x200   16       .   B000  PCjr
  09h  G   40x25  8x8   320x200   16       .   B000  PCjr
  0Ah  G   80x25  8x8   640x200    4       .   B000  PCjr
  0Bh     reserved                                   (EGA internal)
  0Ch     reserved                                   (EGA internal)
  0Dh  G   40x25  8x8   320x200   16       8   A000  EGA,VGA
  0Eh  G   80x25  8x8   640x200   16       4   A000  EGA,VGA
  0Fh  G   80x25  8x14  640x350  mono      2   A000  EGA,VGA
  10h  G   80x25  8x14  640x350    4       2   A000  64k EGA
       G     .     .    640x350   16       2   A000  256k EGA,VGA
  11h  G   80x30  8x16  640x480    2/256K  1   A000  VGA,MCGA
  12h  G   80x30  8x16  640x480   16/256K  1   A000  VGA
  13h  G   40x25  8x8   320x200  256/256K  1   A000  VGA,MCGA