IBM CORPORATION
===============

   IBM PC/XT AND PC/AT CLUSTER ADAPTER

   NIC Type              Unidentified                             
   Network Transfer Rate Unidentified                             
   Data Bus              8-bit ISA                                
   Topology              Linear Bus                               
   Wire Type             RG-59B/U 75ohm coaxial                   
   Boot ROM              Available (location unidentified)        

<gopher://bitreich.org/I/th99/n/I-L/41796-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |             Function             |          Label          |
   |----------------------------------+-------------------------|
   | RG-59B/U 75ohm coaxial connector |           CN1           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Setting                 | Label | Position  |
   |----------------------------------------+-------+-----------|
   |>> | Factory configured - do not alter  |  J3   |  Closed   |
   |---+------------------------------------+-------+-----------|
   |>> | Factory configured - do not alter  | SW1/7 |    Off    |
   |---+------------------------------------+-------+-----------|
   |   | Boot ROM enabled                   | SW1/8 |    On     |
   |---+------------------------------------+-------+-----------|
   |   | Boot ROM disabled                  | SW1/8 |    Off    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        NODE ADDRESS                        |
   |------------------------------------------------------------|
   | Setting | SW1/1  | SW1/2  | SW1/3  | SW1/4 | SW1/5 | SW1/6 |
   |---------+--------+--------+--------+-------+-------+-------|
   |    0    |  Off   |  Off   |  Off   |  Off  |  Off  |  Off  |
   |---------+--------+--------+--------+-------+-------+-------|
   |    1    |   On   |  Off   |  Off   |  Off  |  Off  |  Off  |
   |---------+--------+--------+--------+-------+-------+-------|
   |    2    |  Off   |   On   |  Off   |  Off  |  Off  |  Off  |
   |---------+--------+--------+--------+-------+-------+-------|
   |    3    |   On   |   On   |  Off   |  Off  |  Off  |  Off  |
   |---------+--------+--------+--------+-------+-------+-------|
   |    4    |  Off   |  Off   |   On   |  Off  |  Off  |  Off  |
   |---------+--------+--------+--------+-------+-------+-------|
   |   59    |   On   |   On   |  Off   |  On   |  On   |  On   |
   |---------+--------+--------+--------+-------+-------+-------|
   |   60    |  Off   |  Off   |   On   |  On   |  On   |  On   |
   |---------+--------+--------+--------+-------+-------+-------|
   |   61    |   On   |  Off   |   On   |  On   |  On   |  On   |
   |---------+--------+--------+--------+-------+-------+-------|
   |   62    |  Off   |   On   |   On   |  On   |  On   |  On   |
   |---------+--------+--------+--------+-------+-------+-------|
   |   63    |   On   |   On   |   On   |  On   |  On   |  On   |
   |------------------------------------------------------------|
   |      Note: A total of 64 node address settings are         |
   |      available. The switches are a binary representation   |
   |      of the decimal node addresses. SW1/6 is the Most      |
   |      Significant Bit and switch SW1/1 is the Least         |
   |      Significant Bit. The switches have the following      |
   |      decimal values: SW1/6=32, SW1/5=16, SW1/4=8, SW1/3=4, |
   |      SW1/2=2, SW1/1=1. Turn on the switches and add the    |
   |      values of the switches that are on to obtain the      |
   |      correct node ID. (Off=0, On=1)                        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         INTERRUPT                          |
   |------------------------------------------------------------|
   |          Setting           |              J2               |
   |----------------------------+-------------------------------|
   |            IRQ3            |       Pins 3 & 4 closed       |
   |----------------------------+-------------------------------|
   |            IRQ7            |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |          Disabled          |             Open              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     SHARED RAM ADDRESS                     |
   |------------------------------------------------------------|
   |Setting|SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5 |SW1/6|SW1/7|SW1/8|
   |-------+------+------+------+------+------+-----+-----+-----|
   |00390h | Off  | Off  | Off  | Off  | Off  | Off | Off | Off |
   |-------+------+------+------+------+------+-----+-----+-----|
   |00790h |  On  | Off  | Off  | Off  | Off  | Off | Off | Off |
   |-------+------+------+------+------+------+-----+-----+-----|
   |00B90h | Off  |  On  | Off  | Off  | Off  | Off | Off | Off |
   |-------+------+------+------+------+------+-----+-----+-----|
   |00F90h |  On  |  On  | Off  | Off  | Off  | Off | Off | Off |
   |-------+------+------+------+------+------+-----+-----+-----|
   |01390h | Off  | Off  |  On  | Off  | Off  | Off | Off | Off |
   |-------+------+------+------+------+------+-----+-----+-----|
   |3EF90h |  On  |  On  | Off  |  On  |  On  | On  | On  | On  |
   |-------+------+------+------+------+------+-----+-----+-----|
   |3F390h | Off  | Off  |  On  |  On  |  On  | On  | On  | On  |
   |-------+------+------+------+------+------+-----+-----+-----|
   |3F790h |  On  | Off  |  On  |  On  |  On  | On  | On  | On  |
   |-------+------+------+------+------+------+-----+-----+-----|
   |3FB90h | Off  |  On  |  On  |  On  |  On  | On  | On  | On  |
   |-------+------+------+------+------+------+-----+-----+-----|
   |3FF90h |  On  |  On  |  On  |  On  |  On  | On  | On  | On  |
   |------------------------------------------------------------|
   |     Note: A total of 255 base address settings are         |
   |     available. The switches are a binary representation of |
   |     the decimal memory addresses. SW1/8 is the Most        |
   |     Significant Bit and switch SW1/1 is the Least          |
   |     Significant Bit. The switches have the following       |
   |     decimal values: SW1/8=131,072, SW1/7=65,536,           |
   |     SW1/6=32,768, SW1/5=16,384, SW1/4=8,192, SW1/3=4,096,  |
   |     SW1/2=2,048, SW1/1=1,024. Turn off the switches and add|
   |     the values of the switches that are off to 912 to      |
   |     obtain the correct memory address. (Off=0, On=1)       |
   +------------------------------------------------------------+