DIGITAL COMMUNICATIONS ASSOCIATES, INC.
=======================================

   IRMA3 COMVERTIBLE

   NIC Type              Ethernet                                 
   Network Transfer Rate 10Mbps                                   
   Data Bus              8-bit ISA/MCA                            
   Topology              Linear Bus, Star                         
   Wiring Type           Unshielded twisted pair                  
                                                                  
                         RG-58A/U 50ohm coaxial                   
   Boot ROM              Not available                            

<gopher://bitreich.org/I/th99/n/C-D/41577-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |         Function          | Label |    Function    | Label |
   |---------------------------+-------+----------------+-------|
   | Unshielded twisted pair   |  CN1  | RG-58A/U 50ohm |  CN2  |
   | port                      |       | coaxial port   |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |            Function            | Label |     Position      |
   |--------------------------------+-------+-------------------|
   |>> | High sensitivity selected  |  JP2  | Pins 1 & 2 closed |
   |---+----------------------------+-------+-------------------|
   |   | Low sensitivity selected   |  JP2  | Pins 2 & 3 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 BASE I/O ADDRESS SELECTION                 |
   |------------------------------------------------------------|
   |  Address   |   SW1/1   |   SW1/2   |   SW1/3   |   SW1/4   |
   |------------+-----------+-----------+-----------+-----------|
   |  X'680"h   |    On     |    On     |    On     |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |  X'A80'h   |    On     |    On     |    Off    |    On     |
   |------------+-----------+-----------+-----------+-----------|
   |  X'E80'h   |    On     |    On     |    Off    |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |  X'6A0'h   |    Off    |    On     |    On     |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |  X'AA0'h   |    Off    |    On     |    Off    |    On     |
   |------------+-----------+-----------+-----------+-----------|
   |  X'EA0'h   |    Off    |    On     |    Off    |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |  X'6C0'h   |    On     |    Off    |    On     |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |  X'AC0'h   |    On     |    Off    |    Off    |    On     |
   |------------+-----------+-----------+-----------+-----------|
   |  X'EC0'h   |    On     |    Off    |    Off    |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |  X'6E0'h   |    Off    |    Off    |    On     |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |  X'AE0'h   |    Off    |    Off    |    Off    |    On     |
   |------------+-----------+-----------+-----------+-----------|
   |  X'EE0'h   |    Off    |    Off    |    Off    |    Off    |
   |------------+-----------+-----------+-----------+-----------|
   |  X'280'h   |    On     |    On     |    On     |    On     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CABLE TYPE SELECTION                    |
   |------------------------------------------------------------|
   |               Type                |          JP1           |
   |-----------------------------------+------------------------|
   |>> | RG-58A/U 50ohm coaxial        |   Pins 2 & 3 closed    |
   |---+-------------------------------+------------------------|
   |   | Unshielded twisted pair       |   Pins 1 & 2 closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   |      Note: The backplate must be changed for MCA and for   |
   |      ISA.                                                  |
   +------------------------------------------------------------+