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     The initialization parameter byte is defined as follows:
 
     7 6 5           4 3           2               1 0
     Baud Rate       Parity        Stop Bits       Word Length
 
     000 = 110       X0 = None     0 = 1 bit       10 = 7 bits
     001 = 150       01 = Odd      1 = 2 bits      11 = 8 bits
     010 = 300       11 = Even
     011 = 600
     100 = 1200
     101 = 2400
     110 = 4800
     111 = 9600
 
     To initialize the serial port for data rates greater than 9600
     baud on PS/2 machines, see Int 14h Functions 04h and 05h.
                                    -♦-