INT 80 - SBSIM - "GETVOLUME" - GET SOURCE'S VOLUME
	BX = 0400h
	AX = sound source (see #03974)
Return: CF clear if successful
	    AX = volume
	CF set on error
	    AX = error code (see #03972 at INT 80/BL=00h)
SeeAlso: BX=0401h"SBSIM"


(Table 03974)
Values for SBSIM sound source:
 00h	master volume
 01h	voice
 02h	FM(Frequency Modulation)	A method of encoding data as a series of magnetic flux reversals on disk or tape, commonly known as single-density recording.  In frequency modulation, a series of clock pulses are written at regular intervals, with one data bit for each clock pulse.  See also MFM, RLL.
 03h	CD
 04h	line in
 05h	microphone