Int 2F Fn AF03  - Windos V2.11 - Turn Vidmem On                            [O]

   AX = AF03h

Return: AX = status
       0000h successful
       0001h CPU not in mode set by DOS386=On
       0002h video adapter in graphics mode
       0003h memory chain corrupted

See Also: AX=AF00h"WinDOS",AX=AF04h"WinDOS",AX=AF05h"WinDOS"