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

   MACIRMATRAC

   NIC Type         Token Ring                                    
   Transfer Rate    4/16Mbps                                      
   Data Bus         Apple NuBus                                   
   Topology         Token ring                                    
   Wiring Type      Unshielded twisted pair                       
                                                                  
                    Shielded twisted pair via DB9                 
                                                                  
                    Fiber optic cable                             
   Boot ROM         Available                                     

<gopher://bitreich.org/I/th99/n/C-D/40641-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |           Function            |          Location          |
   |-------------------------------+----------------------------|
   | Ring Interface Module         |            CN1             |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/n/C-D/40641-2.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |           Function            |          Location          |
   |-------------------------------+----------------------------|
   | Mother card                   |            CN1             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         CABLE TYPE                         |
   |------------------------------------------------------------|
   |     Type     |   JP1A    |   JP1B    |   JP2A   |   JP2B   |
   |--------------+-----------+-----------+----------+----------|
   |   Shielded   | Pins 1 &  | Pins 1 &  | Pins 1 & | Pins 1 & |
   | twisted pair | 2 closed  | 2 closed  | 2 closed | 2 closed |
   |--------------+-----------+-----------+----------+----------|
   |  Unshielded  | Pins 2 &  | Pins 2 &  | Pins 2 & | Pins 2 & |
   | twisted pair | 3 closed  | 3 closed  | 3 closed | 3 closed |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/n/C-D/40641-3.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |           Function            |          Location          |
   |-------------------------------+----------------------------|
   | Mother card                   |            CN1             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         CABLE TYPE                         |
   |------------------------------------------------------------|
   |             Type              |            JP1             |
   |-------------------------------+----------------------------|
   |     Shielded twisted pair     |     Pins 1 & 2 closed      |
   |-------------------------------+----------------------------|
   |    Unshielded twisted pair    |     Pins 2 & 3 closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    MISCELLANEOUS NOTES                     |
   |------------------------------------------------------------|
   | There are three other ring interface modules available:    |
   | fiber optic, 4Mbps STP only software configurable, and     |
   | 4/16Mbps STP only software configurable. These additional  |
   | modules have no hardware configurable options, and are     |
   | therefore not illustrated. Connections between the ring    |
   | interface module and the mother card are identical for     |
   | every version of module.                                   |
   +------------------------------------------------------------+