MS400.2
Software Changes:
-----------------
No changes are needed to the mailbox programs themselves but the I/O
routine must be setup.  You will need MBBIOS V2.0 or higher plus the
accompanying customizer (MBBCONFG).
1.  Execute MBBCONFG as per the instructions included with MBBIOS.
2.  Put any multipurpose ports in the first slot (and second if needed).
3.  Select the next slot.  On the port description panel, specify the
    type as "B" ("Specified exactly"), put in the desired COM number
    and hit enter.
4.  On the exact specification panel, put the actual port type as "5"
    ("Shared ASYNC Port").  Specify the address as shown below and the
    interrupt number as "2"

              COM1  --  3F8         COM5  --  2F0
              COM2  --  2F8         COM6  --  2E8
              COM3  --  3E8         COM7  --  2E0
              COM4  --  3E0         COM8  --  260

5.  Repeat steps 3 and 4 for each BBS only port.
6.  Exit the program using the "F3" key.
CONTINUED IN FILE MS400.5