Int 2F Fn 60FF  U - Iplay V1.00b - Installation Check                      [s]

   AX = 60FFh
   DL = 00h (function number)
   BX = 5344h ('SD')
   CX = 4D50h ('MP')

Return: AX = 4F4Bh ('OK') if installed
Program: IPLAY is the Inertia Player by Prime and Excalibur for .MODules
     (digitized music files)

Note:  in version 1.00b, any value for DL except 01h invokes this function

See Also: AX=60FFh/DL=01h