INT 1A - TIME - SET REAL-TIME CLOCK TIME (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model)
	AH = 03h
	CH = hour (BCD(Binary Coded Decimal) A method of data storage where two decimal digits are stored in each byte, one in the upper four bits and the other in the lower four bits.  Since only the values 0 through 9 are used in each half of a byte, BCD values can be read as decimal numbers on a hexadecimal display of memory or a file.)
	CL = minutes (BCD(Binary Coded Decimal) A method of data storage where two decimal digits are stored in each byte, one in the upper four bits and the other in the lower four bits.  Since only the values 0 through 9 are used in each half of a byte, BCD values can be read as decimal numbers on a hexadecimal display of memory or a file.)
	DH = seconds (BCD(Binary Coded Decimal) A method of data storage where two decimal digits are stored in each byte, one in the upper four bits and the other in the lower four bits.  Since only the values 0 through 9 are used in each half of a byte, BCD values can be read as decimal numbers on a hexadecimal display of memory or a file.)
	DL = daylight savings flag (00h standard time, 01h daylight time)
Return: nothing
Note:	this function is also supported by the Sperry PCIBM PC, which predates the
	  IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. ATIBM PC AT; the data is specified in binary rather than BCD(Binary Coded Decimal) A method of data storage where two decimal digits are stored in each byte, one in the upper four bits and the other in the lower four bits.  Since only the values 0 through 9 are used in each half of a byte, BCD values can be read as decimal numbers on a hexadecimal display of memory or a file. on the
	  Sperry, and the value of DL is ignored
SeeAlso: AH=01h,AH=03h,AH=05h,INT 21/AH=2Dh,INT 4B/AH=01h