INT 1A - AT&TAmerican Telephone and Telegraph 6300 - SET TIME AND DATE
	AH = FFh
	BX = day count (0 = Jan 1, 1984)
	CH = hour
	CL = minute
	DH = second
	DL = hundredths
Return: ???
SeeAlso: AX=CCCCh/BX=CCCCh,AH=FEh,INT 21/AH=2Bh"DATE",INT 21/AH=2Dh