RACAL INTERLAN
==============

   INTERLAN TR16/4 ISA

   NIC Type              Token Ring                               
   Network Transfer Rate 4/16Mbps                                 
   Data Bus              16-bit ISA                               
   Topology              Ring                                     
   Wiring Type           Shielded twisted pair                    
                                                                  
                         Unshielded twisted pair                  
   Boot ROM              Not available                            

<gopher://bitreich.org/I/th99/n/P-R/41610-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |        Function         | Label |     Function     | Label |
   |-------------------------+-------+------------------+-------|
   | Unshielded twisted pair |  CN1  | Shielded twisted |  CN2  |
   | port                    |       | pair port        |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Label | Position  |
   |----------------------------------------+-------+-----------|
   |>> | Boot ROM disabled                  | SW2/1 |    On     |
   |---+------------------------------------+-------+-----------|
   |   | Boot ROM enabled                   | SW2/1 |    Off    |
   |---+------------------------------------+-------+-----------|
   |>> | Media type 1 select                | SW2/3 |    On     |
   |---+------------------------------------+-------+-----------|
   |   | Media type 3 select                | SW2/3 |    Off    |
   |---+------------------------------------+-------+-----------|
   |>> | Minimum burst                      | SW2/6 |    On     |
   |---+------------------------------------+-------+-----------|
   |   | Maximum burst                      | SW2/6 |    Off    |
   |---+------------------------------------+-------+-----------|
   |>> | Internal 8Mhz Clock select         | SW2/7 |    On     |
   |---+------------------------------------+-------+-----------|
   |   | Bus clock select                   | SW2/7 |    Off    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     ROM SIZE SELECTION                     |
   |------------------------------------------------------------|
   |            Setting             |           SW2/5           |
   |--------------------------------+---------------------------|
   |>>  |            8KB            |            On             |
   |----+---------------------------+---------------------------|
   |    |           16KB            |            Off            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  NETWORK SPEED SELECTION                   |
   |------------------------------------------------------------|
   |             Speed              |           SW2/2           |
   |--------------------------------+---------------------------|
   |     |          4Mbps           |            Off            |
   |-----+--------------------------+---------------------------|
   |>>   |          16Mbps          |            On             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   DMA CHANNEL SELECTION                    |
   |------------------------------------------------------------|
   |       Channel       |       SW1/7       |      SW1/8       |
   |---------------------+-------------------+------------------|
   |    |       0        |        On         |        On        |
   |----+----------------+-------------------+------------------|
   |    |       5        |        Off        |        On        |
   |----+----------------+-------------------+------------------|
   |    |       6        |        On         |       Off        |
   |----+----------------+-------------------+------------------|
   |>>  |       7        |        Off        |       Off        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 BASE I/O ADDRESS SELECTION                 |
   |------------------------------------------------------------|
   |       Address        |       SW1/1       |      SW1/2      |
   |----------------------+-------------------+-----------------|
   |    |       A00       |        On         |       On        |
   |----+-----------------+-------------------+-----------------|
   |>>  |       A20       |        Off        |       On        |
   |----+-----------------+-------------------+-----------------|
   |    |       A40       |        On         |       Off       |
   |----+-----------------+-------------------+-----------------|
   |    |       A60       |        Off        |       Off       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    INTERRUPT SELECTION                     |
   |------------------------------------------------------------|
   |             IRQ             |     SW1/3     |    SW1/4     |
   |-----------------------------+---------------+--------------|
   |   |            2            |      On       |      On      |
   |---+-------------------------+---------------+--------------|
   |>> |            9            |      Off      |      On      |
   |---+-------------------------+---------------+--------------|
   |   | 10 (IRQ3 if 8-bit slot) |      On       |     Off      |
   |---+-------------------------+---------------+--------------|
   |   | 11 (IRQ2 if 8b-it slot) |      Off      |     Off      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   BOOT ROM CONFIGURATION                   |
   |------------------------------------------------------------|
   |             Setting              |          SW2/4          |
   |----------------------------------+-------------------------|
   |>>  |           Enabled           |           Off           |
   |----+-----------------------------+-------------------------|
   |    |          Disabled           |           On            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   ROM ADDRESS SELECTION                    |
   |------------------------------------------------------------|
   |       Address        |      SW1/5       |      SW1/6       |
   |----------------------+------------------+------------------|
   |>> |       CC00       |        On        |        On        |
   |---+------------------+------------------+------------------|
   |   |       D000       |       Off        |        On        |
   |---+------------------+------------------+------------------|
   |   |       D800       |        On        |       Off        |
   |---+------------------+------------------+------------------|
   |   |       DC00       |       Off        |       Off        |
   +------------------------------------------------------------+