INT 83 - JM Pro Tracker v5.0 - ???                                              
	AH = 10h
	BL = subfunction???
	CX = ???
	DX = ???
	???
Return: CF clear if successful
	    CX = DX = ???
	CF set on error
	    AX = error code (see #03976)
SeeAlso: AH=18h