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

   HOSTESS 550/MC 16

   Card Type          I/O controller                              
   Chipset/Controller NEC Corporation                             
   I/O Options        Serial ports (8 or 16)                      
   Maximum DRAM       N/A                                         

<gopher://bitreich.org/I/th99/i/C-D/50289-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |            Purpose            |          Location          |
   |-------------------------------+----------------------------|
   | 100 Pin interface connector   |            CN1             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                RS-232/RS-422 MODE SELECTION                |
   |------------------------------------------------------------|
   |      Jumper      |       RS-232       |       RS-422       |
   |------------------+--------------------+--------------------|
   |     JP1A - D     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |     JP2A - D     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |     JP3A - D     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |     JP4A - D     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |     JP5A - D     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |     JP6A - D     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |     JP7A - D     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |     JP8A - D     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |     JP9A - D     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |    JP10A - D     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |    JP11A - D     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |    JP12A - D     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |    JP13A - D     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |    JP14A - D     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |    JP15A - D     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |    JP16A - D     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                MISCELLANEOUS TECHNICAL NOTE                |
   |------------------------------------------------------------|
   |     Serial ports are located on an interface box which     |
   |    connects to Hostess 550/MC via the 100-pin interface    |
   |                         connector.                         |
   +------------------------------------------------------------+