INT 15 - HUNTER 16 - GET SERIAL NUMBER                                          
	AH = 6Ch
Return: BL:CX = 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. serial number
Note:	when shipped, all Hunter 16s have the same Serial Number, but a
	  different number can be stored (see AH=72h)
SeeAlso: AH=6Bh,AH=72h