     $DE08/56840/RR+8:   SilverSurfer: Receive/Transmit Buffer
                                       Baud Rate Divisor LSB

      Receive/Transmit Buffer    (if Bit 7 of $DE0B is 0)

      Baud Rate Divisor Low Byte (if Bit 7 of $DE0B is 1)

       Baud rate divisors can be calculated by taking the oscillating frequency
       (7,372,800) and dividing by the quantity of the desired baud rate times
       the UART clocking factor (16). Use the following formula (avoid 0!):

       Divisor = 7372800 / (BaudRate * 16)

       Examples:

        BaudRate     Divisor               BaudRate     Divisor
                  dec.     hex.                      dec.     hex.

           300    1536    $0600              19200     24    $0018
           600     768    $0300              38400     12    $000c
          1200     384    $0180              57600      8    $0008
          1800     256    $0100             115200      4    $0004
          2400     192    $00c0             153600      3    $0003
          4800      96    $0060             230400      2    $0002
          9600      48    $0030             460800      1    $0001