MADGE NETWORKS, LTD.
====================

   SMART 16/4 FIBER AT RINGNODE

   NIC Type      Token Ring                                       
   Transfer Rate 4/16Mbps                                         
   Data Bus      16-bit ISA                                       
   Topology      Ring                                             
   Wiring Type   62.5/125m m multimode graded index optical fiber 
   Boot ROM      Available                                        

<gopher://bitreich.org/I/th99/n/M-O/40775-1.png>
   

   +------------------------------------------------------------+
   |                       ADDRESS SELECT                       |
   |------------------------------------------------------------|
   |    I/O Address    | Base Memory Address |  SW2/1  | SW2/2  |
   |-------------------+---------------------+---------+--------|
   |>> | 0A20 - 0A2Fh  |   CC000 - CDFFFh    |   On    |   On   |
   |---+---------------+---------------------+---------+--------|
   |   | 1A20 - 1A2Fh  |   DC000 - DFFFFh    |   Off   |   On   |
   |---+---------------+---------------------+---------+--------|
   |   | 2A20 - 2A2Fh  |   CE000 - CFFFFh    |   On    |  Off   |
   |---+---------------+---------------------+---------+--------|
   |   | 3A20 - 3A2Fh  |   DE000 - DFFFFh    |   Off   |  Off   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                AT BUS TIMING COMPATIBILITY                 |
   |------------------------------------------------------------|
   |              Setting              |         SW2/6          |
   |-----------------------------------+------------------------|
   |>>   |           Normal            |           On           |
   |-----+-----------------------------+------------------------|
   |     |          Alternate          |          Off           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                          BOOT ROM                          |
   |------------------------------------------------------------|
   |             Setting             |          SW2/3           |
   |---------------------------------+--------------------------|
   |>> |          Disabled           |           Off            |
   |---+-----------------------------+--------------------------|
   |   |           Enabled           |            On            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       BUS MASTER DMA                       |
   |------------------------------------------------------------|
   |             Setting             |          SW2/4           |
   |---------------------------------+--------------------------|
   |>> |           Enabled           |            On            |
   |---+-----------------------------+--------------------------|
   |   |          Disabled           |           Off            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        CLOCK SOURCE                        |
   |------------------------------------------------------------|
   |              Setting              |         SW2/7          |
   |-----------------------------------+------------------------|
   |>> |         Asynchronous          |          Off           |
   |---+-------------------------------+------------------------|
   |   |          Synchronous          |           On           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     CONCENTRATOR TYPE                      |
   |------------------------------------------------------------|
   |                Setting                |        LB1         |
   |---------------------------------------+--------------------|
<gopher://bitreich.org/I/th99/n/M-O/40775-2.png>
   |>>            |         802.5J         |            |
   |--------------+------------------------+--------------------|
<gopher://bitreich.org/I/th99/n/M-O/40775-3.png>
   |              |       Local wrap       |            |
   |------------------------------------------------------------|
   |   Note: Concentrator type is determined by placing a link  |
   |   block over the LB1 jumper block. The block has an arrow  |
   |   printed on the front and should resemble the diagram     |
   |   shown above.                                             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DATA TRANSFER RATE                     |
   |------------------------------------------------------------|
   |             Speed              |           SW2/8           |
   |--------------------------------+---------------------------|
   |>> |           16Mbps           |            Off            |
   |---+----------------------------+---------------------------|
   |   |           4Mbps            |            On             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DMA CONFIGURATION                      |
   |------------------------------------------------------------|
   |              DMA              |            SW3             |
   |-------------------------------+----------------------------|
   |>>             |       5       |         Position 3         |
   |---------------+---------------+----------------------------|
   |               |       1       |         Position 1         |
   |---------------+---------------+----------------------------|
   |               |       3       |         Position 2         |
   |---------------+---------------+----------------------------|
   |               |       6       |         Position 4         |
   |------------------------------------------------------------|
   | Note: Switch 3 is a four-position slide switch. Each       |
   | position should be silk-screened on the switch itself.     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       8/16 BIT MODE                        |
   |------------------------------------------------------------|
   |              Setting              |         SW2/5          |
   |-----------------------------------+------------------------|
   |>> |         8/16-bit mode         |           On           |
   |---+-------------------------------+------------------------|
   |   |       Force 8-bit mode        |          Off           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      INTERRUPT SELECT                      |
   |------------------------------------------------------------|
   |               IRQ               |           SW1            |
   |---------------------------------+--------------------------|
   |>>           |       IRQ3        |        Position 7        |
   |-------------+-------------------+--------------------------|
   |             |      IR/FONT      |        Position 8        |
   |-------------+-------------------+--------------------------|
   |             |       IRQ5        |        Position 6        |
   |-------------+-------------------+--------------------------|
   |             |       IRQ7        |        Position 5        |
   |-------------+-------------------+--------------------------|
   |             |       IRQ10       |        Position 4        |
   |-------------+-------------------+--------------------------|
   |             |       IRQ11       |        Position 3        |
   |-------------+-------------------+--------------------------|
   |             |       IRQ12       |        Position 2        |
   |-------------+-------------------+--------------------------|
   |             |       IRQ15       |        Position 1        |
   |------------------------------------------------------------|
   | Note: Switch 1 is an eight-position slide switch. Each     |
   | position should be silk-screened on the switch itself.     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |            Purpose            |          Location          |
   |-------------------------------+----------------------------|
   |    Fiber-optic transmitter    |             Tx             |
   |-------------------------------+----------------------------|
   |     Fiber-optic receiver      |             Rx             |
   +------------------------------------------------------------+