Int 2F Fn AF04  - Windos V2.11 - Turn Vidmem Off                           [O]

   AX = AF04h

Return: AX = status
       0000h successful
       0001h video memory is in use

See Also: AX=AF00h"WinDOS",AX=AF03h"WinDOS",AX=AF05h"WinDOS"