Int 2F Fn C000  - Ad-dos - Installation Check                              [V]

   AX = C000h

Return: AL = FFh if installed
       BX = 4144h ('AD')
       CX = 2D44h ('-D')
       DX = 4F53h ('OS')
Program: AD-DOS is the DOS version of the After Dark screen blanker for
     MS Windows

Note:  AH=C0h is the default multiplex number; if this is already in use,
     After Dark will try successive values up to AH=FFh

See Also: AX=C001h,AX=C003h,AX=C005h,AX=C007h,AX=C009h,AX=C020h
Index: screen saver;AD-DOS