Int 2F Fn AB  - Player's Tool 3.996b+ - Installation Check                 [U]

   AH = ABh

Return: BH = FFh if installed
       BL = DOS shell state
       01h in DOS shell
       00h not in DOS shell

See Also: AH=AAh"Player's Tool",AH=ACh"Player's Tool",INT 10/AH=ABh