Int 2F Fn CD00  - Forte/gravis Ultramid - Installation Check               [s]

   AX = CD00h
   BX = 464Fh ('FO')
   CX = 5254h ('RT')
   DX = 4520h ('E ')

Return: AL = FFh if installed
       BX = 4155h ('AU')
       CX = 4449h ('DI')
       DX = 4F20h ('O ')
       ES:SI -> program ID string
Program: ULTRAMID is a MIDI driver for the Gravis UltraSound which allows use
     of AIL drivers with other software
Range: AH=CDh-ECh, selected by scanning for an available multiplex number

See Also: INT 21/AX=FD12h,AX=CD00h/DX=4957h