Int 2F Fn 150E  - Cd-rom V2.00+ - Get/set Volume Descriptor Preference     [d]

   AX = 150Eh
   BX = subfunction
       00h get preference
       DX = 0000h

       Return: DX = preference settings
       01h set preference
       DH = volume descriptor preference
           01h = primary volume descriptor
           02h = supplementary volume descriptor
       DL = supplementary volume descriptor preference
           01h = shift-Kanji
   CX = drive number (0=A:)

Return: CF set on error
       AX = error code (15=invalid drive,1=invalid function)
   CF clear if successful