IN  PUCHAR Addr,
  IN  UCHAR  Value

Routine Description:

    This functions initializes the com port.


    BaudRate - Supplies an optional baud rate.

    PortNumber - supplies an optinal port number.
    BlFileId - A place to store a fake file Id, if successful.

    IsMMIOAddress - Indicates whether or not the given PortAddress
                    parameter is in MMIO address space.

Returned Value:

    TRUE - If a debug port is found, and BlFileId will point to a location within Port[].