COMTROL CORPORATION
===================

   HOSTESS I/S 2

   Card Type          I/O controller                              
   Chipset/Controller Texas Instruments (UART)                    
   I/O Options        Serial ports (2)                            
   Maximum DRAM       8MB                                         

<gopher://bitreich.org/I/th99/i/C-D/50253-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |    Purpose    | Location |       Purpose        | Location |
   |---------------+----------+----------------------+----------|
   | Serial port 1 |   CN1    | External reset       |   CN3    |
   |               |          | connector 1          |          |
   |---------------+----------+----------------------+----------|
   | Serial port 2 |   CN2    | External reset       |   CN4    |
   |               |          | connector 2          |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                RS-232/RS-422 MODE SELECTION                |
   |------------------------------------------------------------|
   |       Mode       |      JP1/A-H       |      JP2/A-H       |
   |------------------+--------------------+--------------------|
   |      RS-422      | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |      RS-232      | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 I/O ADDRESS CONFIGURATION                  |
   |------------------------------------------------------------|
   |  Address   |   SW1/1   |   SW1/2   |   SW1/3   |   SW1/4   |
   |------------+-----------+-----------+-----------+-----------|
   |    218h    |    Off    |    Off    |    Off    |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |    21Ch    |    On     |    Off    |    Off    |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |    238h    |    Off    |    On     |    Off    |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |    23Ch    |    On     |    On     |    Off    |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |    318h    |    Off    |    Off    |    On     |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |    31Ch    |    On     |    Off    |    On     |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |    338h    |    Off    |    On     |    On     |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |    33Ch    |    On     |    On     |    On     |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |    618h    |    Off    |    Off    |    Off    |    On     |
   |------------+-----------+-----------+-----------+-----------|
   |    61Ch    |    On     |    Off    |    Off    |    On     |
   |------------+-----------+-----------+-----------+-----------|
   |    638h    |    Off    |    On     |    Off    |    On     |
   |------------+-----------+-----------+-----------+-----------|
   |    63Ch    |    On     |    On     |    Off    |    On     |
   |------------+-----------+-----------+-----------+-----------|
   |    718h    |    Off    |    Off    |    On     |    On     |
   |------------+-----------+-----------+-----------+-----------|
   |    71Ch    |    On     |    Off    |    On     |    On     |
   |------------+-----------+-----------+-----------+-----------|
   |    738h    |    Off    |    On     |    On     |    On     |
   |------------+-----------+-----------+-----------+-----------|
   |    73Ch    |    On     |    On     |    On     |    On     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |            Size            |            Bank 0             |
   |----------------------------+-------------------------------|
   |           512KB            |         (2) 256K x 9          |
   |----------------------------+-------------------------------|
   |            2MB             |          (2) 1M x 9           |
   |----------------------------+-------------------------------|
   |            8MB             |          (2) 4M x 9           |
   +------------------------------------------------------------+