INT 48 - TI Professional PCIBM PC - SPEAKER DEVICE - SET SPEAKER FREQUENCY
	AH = 02h
	CX = frequency divisor (freq = 1250000 / CX)
Return: nothing
SeeAlso: AH=00h,AH=01h,AH=03h,AH=04h,AH=06h,AH=08h,AH=0Ah,AH=0Bh