INT 48 - TI Professional PC - SPEAKER DEVICE - TURN ON SPEAKER

	AH = 03h
Return: nothing
Desc:	turn on the speaker at the current frequency, leaving it on until
	  explicitly turned off with AH=04h or the end of a subsequent
	  AH=00h
SeeAlso: AH=00h,AH=01h,AH=02h,AH=04h,AH=06h,AH=08h,AH=0Ah,AH=0Bh