Int 2F Fn AF00  - Windos V2.11 - Installation Check                        [O]

   AX = AF00h

Return: AL = FFh if installed
Program: WinDOS is a DOS clone (claimed to be mostly MS-DOS 5.0 API compatible)
     written by Heiko Goemann

See Also: AX=AF01h"WinDOS",INT 21/AH=30h