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       # MACNET
       
          NU460 (VER. A)
       
          NIC Type:           Ethernet                                   
          Transfer Rate:      10Mbps                                     
          Data Bus:           32-Bit NuBus (Apple)                       
          Topology:           Linear Bus                                 
                                                                         
                              Star                                       
          Wiring Type         AUI transceiver via DB-15 port             
                                                                         
                              RG-58A/U 50ohm coaxial                     
                                                                         
                              Shielded/Unshielded twisted pair           
          Boot ROM            Available                                  
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                         CABLE TYPE                         |
          |------------------------------------------------------------|
          |         Type         |    JP3     |    JP4    |  JP5-JP10  |
          |----------------------+------------+-----------+------------|
          | AUI transceiver via  | Pins 2 & 3 | Pins 2 &  | Pins 2 & 3 |
          |      DB-15 port      |   closed   | 3 closed  |   closed   |
          |----------------------+------------+-----------+------------|
          |    RG-58A/U 50ohm    | Pins 1 & 2 | Pins 1 &  | Pins 1 & 2 |
          |       coaxial        |   closed   | 2 closed  |   closed   |
          |----------------------+------------+-----------+------------|
          | Shielded/unshielded  | Pins 2 & 3 | Pins 2 &  |    N/A     |
          |     twisted pair     |   closed   | 3 closed  |            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  LINK INTEGRITY FUNCTION                   |
          |------------------------------------------------------------|
          |          Setting           |              JP1              |
          |----------------------------+-------------------------------|
          | » |        Enabled         |       Pins 1 & 2 closed       |
          |---+------------------------+-------------------------------|
          |   |        Disabled        |       Pins 2 & 3 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    ON-BOARD TERMINATOR                     |
          |------------------------------------------------------------|
          |          Setting           |              JP2              |
          |----------------------------+-------------------------------|
          | » |        Disabled        |       Pins 2 & 3 closed       |
          |---+------------------------+-------------------------------|
          |   |        Enabled         |       Pins 1 & 2 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      DIAGNOSTIC LEDS                       |
          |------------------------------------------------------------|
          | LED  | Status  |                 Condition                 |
          |------+---------+-------------------------------------------|
          |  D1  |   On    |  Twisted pair network connection is good  |
          |------+---------+-------------------------------------------|
          |  D1  |   Off   | Twisted pair network connection is broken |
          |------+---------+-------------------------------------------|
          |  D2  |   On    |          Data is being received           |
          |------+---------+-------------------------------------------|
          |  D2  |   Off   |        Data is not being received         |
          |------+---------+-------------------------------------------|
          |  D3  |   On    |         Data is being transmitted         |
          |------+---------+-------------------------------------------|
          |  D3  |   Off   |       Data is not being transmitted       |
          |------+---------+-------------------------------------------|
          |  D4  |   On    |       Collision detected on network       |
          |------+---------+-------------------------------------------|
          |  D4  |   Off   |             Normal operation              |
          |------+---------+-------------------------------------------|
          |  D5  |   On    |   Reversed polarity condition detected    |
          |------+---------+-------------------------------------------|
          |  D5  |   Off   |             Normal operation              |
          +------------------------------------------------------------+