INT 21 - DOS 1+ - SET SYSTEM TIME

	AH = 2Dh
	CH = hour
	CL = minute
	DH = second
	DL = 1/100 seconds
Return: AL = result
	    00h successful
	    FFh invalid time, system time unchanged
Note:	DOS 3.3+ also sets CMOS clock; due to the limitations of the CLOCK$
	  driver interface, the CMOS date is also updated to the current
	  DOS date
SeeAlso: AH=2Bh"DOS",AH=2Ch,INT 1A/AH=01h,INT 1A/AH=03h,INT 1A/AH=FFh"AT&T"