Int 2F Fn 8221  - Modres - Installation Check                              [s]

   AX = 8221h

Return: AX = status
       5722h successful
       other MODRES not installed
   BX = BCD version number (BH = major, BL = minor)
   DX:CX -> Output Device structure (read-only) (see #2647)

See Also: AX=8220h,AX=8222h,AX=8225h,AX=8227h

Format of Output Device structure [array]:
Offset Size    Description (Table 2647)
 00h 20 BYTEs  ASCIZ name of the output device
       (end of list if first char is FFh)
 14h   WORD    apparently always FFFFh
 16h   WORD    0000h if output device not available
       else first I/O port for the output device
 18h   WORD    second I/O port for the output device (for example
         if it is stereo)
       000oh if only one port used or device is not available
 1Ah  7 BYTEs  ???

See Also: #2646,#2648

(Table 2648)
Values for MODRES v1.52 output device index:
 00h   PC speaker
 01h   D/A Converter on LPT1
 02h   D/A Converter on LPT2
 03h   D/A Converter on LPT3
 04h   D/A Converter on LPT4
 05h   D/A Converter on LPT1&LPT2 (stereo)
 06h   D/A Converter on LPT1&LPT2 (mono)
 07h   Sound Blaster (port 02x0h)
 08h   User Defined D/A (mono)
 09h   User Defined D/A (stereo)
 0Ah   Stereo-on-1
 0Bh   Disney SS su LPT1
 0Ch   Disney SS su LPT2
 0Dh   Disney SS su LPT3
 0Eh   Disney SS su LPT4

Note:  this list may vary between versions of MODRES