Add 8 bit BCD numbers
Algorithm :
Step I       :    Initialize the data memory.
Step II     :    Get the first BCD number in AL.
Step III   :    Get the second BCD number in BL.
Step IV    :    Add the two BCD numbers.
Step V     :    Using DAA, adjust result to valid BCD number.
Step VI    :    Display the result.
Step VII  :    Stop.
  Program :