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

   HOSTESS I8

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

<gopher://bitreich.org/I/th99/i/C-D/50127-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Purpose        | Location  |   Purpose    | Location |
   |----------------------+-----------+--------------+----------|
   | 100 Pin interface    |    CN1    | Upgrade      |    P1    |
   | connector            |           | connector 4  |          |
   |----------------------+-----------+--------------+----------|
   | Upgrade connector 1  |    J1     | Upgrade      |    P2    |
   |                      |           | connector 5  |          |
   |----------------------+-----------+--------------+----------|
   | Upgrade connector 2  |    J2     | Upgrade      |    P4    |
   |                      |           | connector 6  |          |
   |----------------------+-----------+--------------+----------|
   | Upgrade connector 3  |    J4     |              |          |
   |------------------------------------------------------------|
   | Note: Connectors J1, J2 and J4 interface with connectors   |
   | P1, P2 and P4 respectively.                                |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   I/O ADDRESS SELECTION                    |
   |------------------------------------------------------------|
   |  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     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   RS-232 MODE SELECTION                    |
   |------------------------------------------------------------|
   |            Port            |            RS-232             |
   |----------------------------+-------------------------------|
   |           JP1-16           |       Pins 1 & 2 closed       |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/i/C-D/50127-2.png>
   

   +------------------------------------------------------------+
   |                   RS-422 MODE SELECTION                    |
   |------------------------------------------------------------|
   |           Jumper           |            RS-422             |
   |----------------------------+-------------------------------|
   |          JP1-4/1           |       Pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   |          JP1-4/2           |       Pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   |          JP1-4/3           |       Pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   |          JP1-4/4           |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |           JP5-8            |       Pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   |           JP9-16           |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/i/C-D/50127-3.png>
   

   +------------------------------------------------------------+
   |                   RS-485 MODE SELECTION                    |
   |------------------------------------------------------------|
   |            Port            |            RS-485             |
   |----------------------------+-------------------------------|
   |           JP1-16           |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

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