(TXT) View Source
       
       # DIGITAL COMMUNICATIONS ASSOCIATES, INC. (DCA)
       
          IRMATRAC TOKEN-RING ADAPTER/CONVERTIBLE
       
          4MBPS-ONLY RING INTERFACE MODULE (RIM)
       
          NIC Type         Token-Ring                                    
          Transfer Rate    4/16Mbps                                      
          Data Bus         16-bit ISA/MCA                                
          Topology         Ring                                          
          Wiring Type      Unshielded twisted pair                       
                                                                         
                           Shielded twisted pair (DB-9 port)             
          Boot ROM         Available                                     
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                      I/O BASE ADDRESS                      |
          |------------------------------------------------------------|
          |           Address           |             JP1              |
          |-----------------------------+------------------------------|
          | » |      0A20 - 0A3Fh       |      Pins 1 & 2 closed       |
          |---+-------------------------+------------------------------|
          |   |      1A20 - 1A3Fh       |      Pins 2 & 3 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |            Purpose            |          Location          |
          |-------------------------------+----------------------------|
          |  Ring Interface Module (RIM)  |            CON1            |
          +------------------------------------------------------------+
       
 (IMG) IMG 2
          
       
          +------------------------------------------------------------+
          |                         CABLE TYPE                         |
          |------------------------------------------------------------|
          |                 Type                  |      JP2A - D      |
          |---------------------------------------+--------------------|
          | » |      Unshielded twisted pair      | Pins 1 & 2 closed  |
          |---+-----------------------------------+--------------------|
          |   | Shielded twisted pair (DB-9 port) | Pins 2 & 3 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |            Purpose            |          Location          |
          |-------------------------------+----------------------------|
          |       Backplane Adapter       |            CON1            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    MISCELLANEOUS NOTES                     |
          |------------------------------------------------------------|
          | Although the backplane adapter can have a 4/16Mbps or      |
          | 4Mbps-only Ring Interface Module (RIM), the 4Mbps-only RIM |
          | is diagrammed because the 4/16Mbps RIM does not have       |
          | jumpers.                                                   |
          +------------------------------------------------------------+