INT 1A,2 - Read Time From Real Time Clock (XT 286,AT,PS/2)

	AH = 02


	on return:
	CF = 0 if successful
	   = 1 if error, RTC not operating
	CH = hours in BCD
	CL = minutes in BCD
	DH = seconds in BCD
	DL = 1 if daylight savings time option


	- on AT with BIOS before 6/10/85, DL is not returned