Int 65  - Ad Lib Sound.com - Interface                                     [s]

   SI = function number (see also entries below)
       0000h Init
       0002h RelTimeStart
       0003h SetState
       0004h GetState
       0005h Flush
       0006h SetMode
       0007h GetMode
       0008h SetRelVolume
       0009h SetTempo
       000Ah SetTranspose
       000Bh GetTranspose
       000Ch SetActVoice
       000Dh GetActVoice
       000Eh PlayNoteDel
       000Fh PlayNote
       0010h SetTimbre
       0011h SetPitch
       0012h SetTickBeat
       0013h NoteOn
       0014h NoteOff
       0015h Timbre
       0016h SetPitchBend
       0017h WaveForm
   ES:BX -> arguments

Note:  the installation check consists of checking for the signature block
     immediately preceding the interrupt handler (see below)

See Also: SI=8000h
Index: installation check;Ad Lib SOUND.COM

Format of signature block:
Offset Size    Description
 00h   WORD    version number
 02h 19 BYTEs  "SOUND-DRIVER-AD-LIB"
 15h   BYTE    01h
 16h   BYTE    01h
 17h   BYTE    00h