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

   HOSTESS

   Card Type          Multi-user serial controller                
   Chipset/Controller Texas Instruments (UART)                    
   I/O Options        Serial ports (4 or 8)                       
   Maximum DRAM       N/A                                         

<gopher://bitreich.org/I/th99/i/C-D/50258-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Purpose       | Location |    Purpose     | Location |
   |---------------------+----------+----------------+----------|
   | 100 Pin interface   |   CN1    | External reset |   CN4    |
   | connector           |          | connector 1    |          |
   |---------------------+----------+----------------+----------|
   | Upgrade connector 1 |   CN2    | External reset |   CN5    |
   |                     |          | connector 2    |          |
   |---------------------+----------+----------------+----------|
   | Upgrade connector 2 |   CN3    |                |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   I/O ADDRESS SELECTION                    |
   |------------------------------------------------------------|
   |  Address  |SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5 |SW1/6 |SW1/7 |
   |-----------+------+------+------+------+------+------+------|
   |   100h    |  On  |  On  |  On  |  On  | Off  |  On  |  On  |
   |-----------+------+------+------+------+------+------+------|
   |   140h    |  On  |  On  |  On  |  On  | Off  |  On  | Off  |
   |-----------+------+------+------+------+------+------+------|
   |   200h    |  On  |  On  |  On  | Off  |  On  |  On  |  On  |
   |-----------+------+------+------+------+------+------+------|
   |   240h    |  On  |  On  |  On  | Off  |  On  |  On  | Off  |
   |-----------+------+------+------+------+------+------+------|
   |   280h    |  On  |  On  |  On  | Off  |  On  | Off  |  On  |
   |-----------+------+------+------+------+------+------+------|
   |   500h    |  On  |  On  | Off  |  On  | Off  |  On  |  On  |
   |-----------+------+------+------+------+------+------+------|
   |   540h    |  On  |  On  | Off  |  On  | Off  |  On  | Off  |
   |-----------+------+------+------+------+------+------+------|
   |   580h    |  On  |  On  | Off  |  On  | Off  | Off  |  On  |
   |-----------+------+------+------+------+------+------+------|
   |   600h    |  On  |  On  | Off  | Off  |  On  |  On  |  On  |
   |-----------+------+------+------+------+------+------+------|
   |   640h    |  On  |  On  | Off  | Off  |  On  |  On  | Off  |
   |-----------+------+------+------+------+------+------+------|
   |   680h    |  On  |  On  | Off  | Off  |  On  | Off  |  On  |
   |-----------+------+------+------+------+------+------+------|
   |   700h    |  On  |  On  | Off  | Off  | Off  |  On  |  On  |
   |------------------------------------------------------------|
   |Note: Switch SW1/1 in on for the four port controller and   |
   |Off for the eight port model.                               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 FOUR/EIGHT PORT SELECTION                  |
   |------------------------------------------------------------|
   | Number of Ports |        JP1        |   SW1/1   |  SW2/1   |
   |-----------------+-------------------+-----------+----------|
   |        4        | Pins 2 & 3 closed |    On     |    On    |
   |-----------------+-------------------+-----------+----------|
   |        8        | Pins 1 & 2 closed |    Off    |   Off    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |      SERIAL PORT INTERRUPT SELECTION (MASK ENABLE ON)      |
   |------------------------------------------------------------|
   | IRQ  | SW2/1  | SW2/2  | SW2/3 |SW2/4 |SW2/5 |SW2/6 |SW2/7 |
   |------+--------+--------+-------+------+------+------+------|
   | 2/9  |   On   |   On   |  Off  | Off  | Off  | Off  | Off  |
   |------+--------+--------+-------+------+------+------+------|
   |  3   |   On   |  Off   |  On   | Off  | Off  | Off  | Off  |
   |------+--------+--------+-------+------+------+------+------|
   |  4   |   On   |  Off   |  Off  |  On  | Off  | Off  | Off  |
   |------+--------+--------+-------+------+------+------+------|
   |  5   |   On   |  Off   |  Off  | Off  |  On  | Off  | Off  |
   |------+--------+--------+-------+------+------+------+------|
   |  10  |   On   |  Off   |  Off  | Off  | Off  |  On  | Off  |
   |------+--------+--------+-------+------+------+------+------|
   |  11  |   On   |  Off   |  Off  | Off  | Off  | Off  |  On  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |       SERIAL PORT INTERRUPT SELECT (MASK ENABLE OFF)       |
   |------------------------------------------------------------|
   | IRQ  | SW2/1 | SW2/2 | SW2/3 | SW2/4 | SW2/5 |SW2/6 |SW2/7 |
   |------+-------+-------+-------+-------+-------+------+------|
   | 2/9  |  Off  |  On   |  Off  |  Off  |  Off  | Off  | Off  |
   |------+-------+-------+-------+-------+-------+------+------|
   |  3   |  Off  |  Off  |  On   |  Off  |  Off  | Off  | Off  |
   |------+-------+-------+-------+-------+-------+------+------|
   |  4   |  Off  |  Off  |  Off  |  On   |  Off  | Off  | Off  |
   |------+-------+-------+-------+-------+-------+------+------|
   |  5   |  Off  |  Off  |  Off  |  Off  |  On   | Off  | Off  |
   |------+-------+-------+-------+-------+-------+------+------|
   |  10  |  Off  |  Off  |  Off  |  Off  |  Off  |  On  | Off  |
   |------+-------+-------+-------+-------+-------+------+------|
   |  11  |  Off  |  Off  |  Off  |  Off  |  Off  | Off  |  On  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                MISCELLANEOUS TECHNICAL NOTE                |
   |------------------------------------------------------------|
   |     Serial ports are located on an interface box which     |
   |  connects to Hostess via the 100-pin interface connector.  |
   +------------------------------------------------------------+