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       # THOMAS-CONRAD CORPORATION
       
          TC4043
       
          NIC Type         Token Ring                                    
          Transfer Rate    16Mbps/4Mbps                                  
          Data Bus         8-bit ISA/16-bit ISA                          
          Topology         Ring                                          
          Wiring Type      Shielded/Unshielded twisted pair              
          Boot ROM         Available (location unidentified)             
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                    INTERRUPT SELECTION                     |
          |------------------------------------------------------------|
          |       IRQ        |       SW1/7        |       SW1/8        |
          |------------------+--------------------+--------------------|
          |       2/9        |        Off         |        Off         |
          |------------------+--------------------+--------------------|
          |        3         |        Off         |         On         |
          |------------------+--------------------+--------------------|
          |        6         |         On         |        Off         |
          |------------------+--------------------+--------------------|
          |        7         |         On         |         On         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     RAM SIZE SELECTION                     |
          |------------------------------------------------------------|
          |       Size        |       SW2/2        |       SW2/3       |
          |-------------------+--------------------+-------------------|
          |       16KB        |         On         |        Off        |
          |-------------------+--------------------+-------------------|
          |       64KB        |         On         |        On         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 BASE I/O ADDRESS SELECTION                 |
          |------------------------------------------------------------|
          |            Address            |           SW2/1            |
          |-------------------------------+----------------------------|
          |        Primary (A20h)         |             On             |
          |-------------------------------+----------------------------|
          |       Alternate (A24h)        |            Off             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   ROM ADDRESS SELECTION                    |
          |------------------------------------------------------------|
          |  Address   |   SW1/3   |   SW1/4   |   SW1/5   |   SW1/6   |
          |------------+-----------+-----------+-----------+-----------|
          |   C0000h   |    Off    |    Off    |    Off    |    Off    |
          |------------+-----------+-----------+-----------+-----------|
          |   C2000h   |    Off    |    Off    |    Off    |    On     |
          |------------+-----------+-----------+-----------+-----------|
          |   C4000h   |    Off    |    Off    |    On     |    Off    |
          |------------+-----------+-----------+-----------+-----------|
          |   C6000h   |    Off    |    Off    |    On     |    On     |
          |------------+-----------+-----------+-----------+-----------|
          |   C8000h   |    Off    |    On     |    Off    |    Off    |
          |------------+-----------+-----------+-----------+-----------|
          |   CA000h   |    Off    |    On     |    Off    |    On     |
          |------------+-----------+-----------+-----------+-----------|
          |   CC000h   |    Off    |    On     |    On     |    Off    |
          |------------+-----------+-----------+-----------+-----------|
          |   CE000h   |    Off    |    On     |    On     |    On     |
          |------------+-----------+-----------+-----------+-----------|
          |   D0000h   |    On     |    Off    |    Off    |    Off    |
          |------------+-----------+-----------+-----------+-----------|
          |   D2000h   |    On     |    Off    |    Off    |    On     |
          |------------+-----------+-----------+-----------+-----------|
          |   D4000h   |    On     |    Off    |    On     |    Off    |
          |------------+-----------+-----------+-----------+-----------|
          |   D6000h   |    On     |    Off    |    On     |    On     |
          |------------+-----------+-----------+-----------+-----------|
          |   D8000h   |    On     |    On     |    Off    |    Off    |
          |------------+-----------+-----------+-----------+-----------|
          |   DA000h   |    On     |    On     |    Off    |    On     |
          |------------+-----------+-----------+-----------+-----------|
          |   DC000h   |    On     |    On     |    On     |    Off    |
          |------------+-----------+-----------+-----------+-----------|
          |   DE000h   |    On     |    On     |    On     |    On     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    RING SPEED SELECTION                    |
          |------------------------------------------------------------|
          |            Speed             |            SW2/4            |
          |------------------------------+-----------------------------|
          |            4Mbps             |             Off             |
          |------------------------------+-----------------------------|
          |            16Mbps            |             On              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                BLOCK DECODE SIZE SELECTION                 |
          |------------------------------------------------------------|
          |             Size             |            SW2/8            |
          |------------------------------+-----------------------------|
          |             16KB             |             On              |
          |------------------------------+-----------------------------|
          |            128KB             |             Off             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     BOOT ROM SELECTION                     |
          |------------------------------------------------------------|
          |            Setting            |            JP1             |
          |-------------------------------+----------------------------|
          |           Disabled            |           Closed           |
          |-------------------------------+----------------------------|
          |            Enabled            |            Open            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  FORCED 8-BIT MODE SELECT                  |
          |------------------------------------------------------------|
          |             Mode              |            JP2             |
          |-------------------------------+----------------------------|
          |     8-bit transfer forced     |           Closed           |
          |-------------------------------+----------------------------|
          |    16-bit transfer allowed    |            Open            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             FACTORY CONFIGURED - DO NOT ALTER              |
          |------------------------------------------------------------|
          |            Switch            |           Setting           |
          |------------------------------+-----------------------------|
          |            SW2/5             |             On              |
          |------------------------------+-----------------------------|
          |            SW2/6             |             On              |
          |------------------------------+-----------------------------|
          |            SW2/7             |             On              |
          +------------------------------------------------------------+