VISTACOM, INC.
==============

   CP BOARD, DCT BOARD, NI/11 BOARD, NI/35 BOARD, NI/MVIP BOARD

   Card Type        Serial/Sound coding                           
   Chipset          Texas Instruments                             
   Controller       
   I/O Options (CP  Serial ports (2)                              
   BOARD)           
   I/O Options (DCT Audio in, audio out, microphone in, telephone 
   BOARD)           handset, video port                           
   Maximum DRAM     N/A                                           

<gopher://bitreich.org/I/th99/v/U-Z/50984-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Purpose      | Location |     Purpose      | Location |
   |-------------------+----------+------------------+----------|
   | 9-pin D-connector |   XP2    | 40-pin network   |   XP5    |
   |                   |          | interface        |          |
   |                   |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | 9-pin D-connector |   XP3    | 40-pin audio     |   XP6    |
   |                   |          | codec connector  |          |
   |-------------------+----------+------------------+----------|
   | 26-pin connector  |   XP4    | 16-pin analog    |   XP7    |
   |                   |          | audio/video      |          |
   |                   |          | connector        |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 BASE I/O ADDRESS SELECTION                 |
   |------------------------------------------------------------|
   | Address        | W7           | W8           | W9          |
   |----------------+--------------+--------------+-------------|
   |>> | 300h       | Closed       | Closed       | Open        |
   |---+------------+--------------+--------------+-------------|
   |   | 200h       | Closed       | Closed       | Closed      |
   |---+------------+--------------+--------------+-------------|
   |   | 220h       | Open         | Closed       | Closed      |
   |---+------------+--------------+--------------+-------------|
   |   | 240h       | Closed       | Open         | Closed      |
   |---+------------+--------------+--------------+-------------|
   |   | 260h       | Open         | Open         | Closed      |
   |---+------------+--------------+--------------+-------------|
   |   | 320h       | Open         | Closed       | Open        |
   |---+------------+--------------+--------------+-------------|
   |   | 340h       | Closed       | Open         | Open        |
   |---+------------+--------------+--------------+-------------|
   |   | 360h       | Open         | Open         | Open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    INTERRUPT SELECTION                     |
   |------------------------------------------------------------|
   |   IRQ    |   W1    |   W2    |   W3    |   W4    |   W5    |
   |----------+---------+---------+---------+---------+---------|
   |>> |  15  |  Open   |  Open   |  Open   |  Open   | Closed  |
   |---+------+---------+---------+---------+---------+---------|
   |   |  9   |  Open   |  Open   |  Open   | Closed  |  Open   |
   |---+------+---------+---------+---------+---------+---------|
   |   |  10  | Closed  |  Open   |  Open   |  Open   |  Open   |
   |---+------+---------+---------+---------+---------+---------|
   |   |  11  |  Open   | Closed  |  Open   |  Open   |  Open   |
   |---+------+---------+---------+---------+---------+---------|
   |   |  12  |  Open   |  Open   | Closed  |  Open   |  Open   |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/v/U-Z/50984-2.png>
   

   DCT BOARD

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Purpose      | Location |      Purpose      | Location |
   |------------------+----------+-------------------+----------|
   | 2-pin microphone |    W3    | 16-pin            |   XP6    |
   | connector        |          | audio/video       |          |
   |                  |          | connector         |          |
   |------------------+----------+-------------------+----------|
   | 15-pin analog    |   XP2    | 26-pin daughter   |   XP9    |
   | video port       |          | board connector   |          |
   |------------------+----------+-------------------+----------|
   | Audio in         |   XP3    | 26-pin daughter   |   XP10   |
   |                  |          | board connector   |          |
   |------------------+----------+-------------------+----------|
   | Audio out        |   XP4    | 10-pin connector  |   XP11   |
   |------------------+----------+-------------------+----------|
   | Telephone        |   XP5    |                   |          |
   | handset          |          |                   |          |
   | connector        |          |                   |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 BASE I/O ADDRESS SELECTION                 |
   |------------------------------------------------------------|
   | Address             | W1                | W2               |
   |---------------------+-------------------+------------------|
   |>> | 320h            | Closed            | Open             |
   |---+-----------------+-------------------+------------------|
   |   | 300h            | Closed            | Closed           |
   |---+-----------------+-------------------+------------------|
   |   | 310h            | Open              | Closed           |
   |---+-----------------+-------------------+------------------|
   |   | 330h            | Open              | Open             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             FACTORY CONFIGURED - DO NOT ALTER              |
   |------------------------------------------------------------|
   |           Jumper            |           Position           |
   |-----------------------------+------------------------------|
   |             W7              |             N/A              |
   +------------------------------------------------------------+

                                                                 

   NI/11 BOARD

   NIC Type         ISDN                                          
   Transfer Rate    56/64/112/128/768Kbps                         
   Data Bus         Daughterboard                                 
   Topology         Peer-Peer                                     
   Wiring Type      Unshielded twisted pair                       
   Boot ROM         Not available                                 

<gopher://bitreich.org/I/th99/v/U-Z/50984-3.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Purpose      | Location |     Purpose      | Location |
   |-------------------+----------+------------------+----------|
   | 2-pin connector   |    W2    | 40-pin interface |   XP2    |
   |                   |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | 2-pin connector   |    W4    | 16-pin           |   XP3    |
   |                   |          | synchronous      |          |
   |                   |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | 26-pin network    |   XP1    | 26-pin network   |   XP4    |
   | interface         |          | interface        |          |
   | connector         |          | connector        |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       DIALING SELECT                       |
   |------------------------------------------------------------|
   | Mode                            | W6                       |
   |---------------------------------+--------------------------|
   |>> | DTMF                        | Closed                   |
   |---+-----------------------------+--------------------------|
   |   | Non-DTMF                    | Open                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             FACTORY CONFIGURED - DO NOT ALTER              |
   |------------------------------------------------------------|
   |           Jumper            |           Position           |
   |-----------------------------+------------------------------|
   |             W7              |             Open             |
   +------------------------------------------------------------+

                                                                 

   NI/35 BOARD

   NIC Type         ISDN                                          
   Transfer Rate    56/64/112/128/768Kbps                         
   Data Bus         Daughterboard                                 
   Topology         Peer-Peer                                     
   Wiring Type      Unshielded twisted pair                       
   Boot ROM         Not available                                 

<gopher://bitreich.org/I/th99/v/U-Z/50984-4.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Purpose     | Location |      Purpose       | Location |
   |-----------------+----------+--------------------+----------|
   | 2-pin connector |    W1    | 26-pin network     |   XP1    |
   |                 |          | interface          |          |
   |                 |          | connector          |          |
   |-----------------+----------+--------------------+----------|
   | 2-pin connector |    W2    | 40-pin interface   |   XP2    |
   |                 |          | connector          |          |
   |-----------------+----------+--------------------+----------|
   | 2-pin connector |    W3    | 16-pin synchronous |   XP3    |
   |                 |          | connector          |          |
   |-----------------+----------+--------------------+----------|
   | 2-pin connector |    W4    | 26-pin network     |   XP4    |
   |                 |          | interface          |          |
   |                 |          | connector          |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             FACTORY CONFIGURED - DO NOT ALTER              |
   |------------------------------------------------------------|
   | Jumper                      | Position                     |
   |-----------------------------+------------------------------|
   | W6                          | N/A                          |
   +------------------------------------------------------------+

                                                                 

   NI/MVIP BOARD

   NIC Type         ISDN                                          
   Transfer Rate    56/64/112/128/768Kbps                         
   Data Bus         Daughterboard                                 
   Topology         Peer-Peer                                     
   Wiring Type      Unshielded twisted pair                       
   Boot ROM         Not available                                 

<gopher://bitreich.org/I/th99/v/U-Z/50984-5.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Purpose      | Location |     Purpose      | Location |
   |-------------------+----------+------------------+----------|
   | 40-pin interface  |   XP2    | 40-pin interface |   XP4    |
   | connector         |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | 37-pin interface  |   XP3    |                  |          |
   | connector         |          |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 BASE I/O ADDRESS SELECTION                 |
   |------------------------------------------------------------|
   | Address        | W3           | W2           | W1          |
   |----------------+--------------+--------------+-------------|
   |>> | 300h       | Closed       | Closed       | Open        |
   |---+------------+--------------+--------------+-------------|
   |   | 200h       | Closed       | Closed       | Closed      |
   |---+------------+--------------+--------------+-------------|
   |   | 220h       | Open         | Closed       | Closed      |
   |---+------------+--------------+--------------+-------------|
   |   | 240h       | Closed       | Open         | Closed      |
   |---+------------+--------------+--------------+-------------|
   |   | 260h       | Open         | Open         | Closed      |
   |---+------------+--------------+--------------+-------------|
   |   | 320h       | Open         | Closed       | Open        |
   |---+------------+--------------+--------------+-------------|
   |   | 340h       | Closed       | Open         | Open        |
   |---+------------+--------------+--------------+-------------|
   |   | 360h       | Open         | Open         | Open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                MISCELLANEOUS TECHNICAL NOTE                |
   |------------------------------------------------------------|
   | Models AC/EC, AC16, MA, NI/E1, and NI/T1 are jumperless.   |
   | The AC/EC, AC16, and MA may be found as V9999 records as   |
   | separate entries in the I/O database, and the NI/E1 and    |
   | NI/T1 may be found as N9999 records as separate entries in |
   | the NIC database.                                          |
   +------------------------------------------------------------+