COMPEX, INC.
============

   ANET-1A

   NIC Type         ARCnet                                        
   Transfer Rate    2.5Mbps                                       
   Data Bus         8-bit ISA                                     
   Topology         Star                                          
                                                                  
                    Linear Bus                                    
   Wiring Type      RG-62A/U 93ohm coaxial                        
                                                                  
                    Unshielded twisted pair                       
   Boot ROM         Available                                     

<gopher://bitreich.org/I/th99/n/C-D/40335-1.png>
   

   +------------------------------------------------------------+
   |                        NODE ADDRESS                        |
   |------------------------------------------------------------|
   |Node |SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5 |SW1/6 |SW1/7 |SW1/8|
   |-----+------+------+------+------+------+------+------+-----|
   |  0  |  -   |  -   |  -   |  -   |  -   |  -   |  -   |  -  |
   |-----+------+------+------+------+------+------+------+-----|
   |  1  | Off  | Off  | Off  | Off  | Off  | Off  | Off  | On  |
   |-----+------+------+------+------+------+------+------+-----|
   |  2  | Off  | Off  | Off  | Off  | Off  | Off  |  On  | Off |
   |-----+------+------+------+------+------+------+------+-----|
   |  3  | Off  | Off  | Off  | Off  | Off  | Off  |  On  | On  |
   |-----+------+------+------+------+------+------+------+-----|
   |  4  | Off  | Off  | Off  | Off  | Off  |  On  | Off  | Off |
   |-----+------+------+------+------+------+------+------+-----|
   | 251 |  On  |  On  |  On  |  On  |  On  | Off  |  On  | On  |
   |-----+------+------+------+------+------+------+------+-----|
   | 252 |  On  |  On  |  On  |  On  |  On  |  On  | Off  | Off |
   |-----+------+------+------+------+------+------+------+-----|
   | 253 |  On  |  On  |  On  |  On  |  On  |  On  | Off  | On  |
   |-----+------+------+------+------+------+------+------+-----|
   | 254 |  On  |  On  |  On  |  On  |  On  |  On  |  On  | Off |
   |-----+------+------+------+------+------+------+------+-----|
   | 255 |  On  |  On  |  On  |  On  |  On  |  On  |  On  | On  |
   |------------------------------------------------------------|
   |Note: Node address 0 is used for messaging between nodes and|
   |must not be used.                                           |
   |                                                            |
   |  A total of 255 node address settings are available. The   |
   |  switches are a binary representation of the decimal node  |
   |  addresses. Switch 8 is the Least Significant Bit and      |
   |  switch 1 is the Most Significant Bit. The switches have   |
   |  the following decimal values: switch 8=1, 7=2, 6=4, 5=8,  |
   |  4=16, 3=32, 2=64, 1=128. Turn on the switches and add the |
   |  values of the on switches to obtain the correct node      |
   |  address. (On=1, off=0)                                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     INTERRUPT REQUEST                      |
   |------------------------------------------------------------|
   |   IRQ    |  JP1A   |  JP1B   |  JP1C   |  JP1D   |  JP1E   |
   |----------+---------+---------+---------+---------+---------|
   |>> | 2/9  | Closed  |  Open   |  Open   |  Open   |  Open   |
   |---+------+---------+---------+---------+---------+---------|
   |   |  3   |  Open   | Closed  |  Open   |  Open   |  Open   |
   |---+------+---------+---------+---------+---------+---------|
   |   |  4   |  Open   |  Open   | Closed  |  Open   |  Open   |
   |---+------+---------+---------+---------+---------+---------|
   |   |  5   |  Open   |  Open   |  Open   | Closed  |  Open   |
   |---+------+---------+---------+---------+---------+---------|
   |   |  7   |  Open   |  Open   |  Open   |  Open   | Closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      I/O BASE ADDRESS                      |
   |------------------------------------------------------------|
   |    Address     |     JP2A     |     JP2B     |    JP2C     |
   |----------------+--------------+--------------+-------------|
   |   |    260h    |    Closed    |    Closed    |   Closed    |
   |---+------------+--------------+--------------+-------------|
   |   |    290h    |    Closed    |    Closed    |    Open     |
   |---+------------+--------------+--------------+-------------|
   |>> |    2E0h    |    Closed    |     Open     |   Closed    |
   |---+------------+--------------+--------------+-------------|
   |   |    2F0h    |    Closed    |     Open     |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    300h    |     Open     |    Closed    |   Closed    |
   |---+------------+--------------+--------------+-------------|
   |   |    350h    |     Open     |    Closed    |    Open     |
   |---+------------+--------------+--------------+-------------|
   |   |    380h    |     Open     |     Open     |   Closed    |
   |---+------------+--------------+--------------+-------------|
   |   |    3E0h    |     Open     |     Open     |    Open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |         BASE MEMORY ADDRESS &AMP; BOOT ROM ADDRESS         |
   |------------------------------------------------------------|
   |   Base   |   Boot ROM   | JP3A | JP3B | JP3C | JP3D | JP3E |
   | Address  |   Address    |      |      |      |      |      |
   |----------+--------------+------+------+------+------+------|
   |  |C0000h |    C2000h    |Closed|Closed|Closed|Closed|Closed|
   |--+-------+--------------+------+------+------+------+------|
   |  |C4000h |    C6000h    |Closed|Closed| Open |Closed|Closed|
   |--+-------+--------------+------+------+------+------+------|
   |  |CC000h |    CE000h    |Closed| Open |Closed|Closed|Closed|
   |--+-------+--------------+------+------+------+------+------|
   |>> |D0000h |    D2000h    |Closed| Open | Open |Closed|Closed|
   |--+-------+--------------+------+------+------+------+------|
   |  |D4000h |    D6000h    | Open |Closed|Closed|Closed|Closed|
   |--+-------+--------------+------+------+------+------+------|
   |  |D8000h |    DA000h    | Open |Closed| Open |Closed|Closed|
   |--+-------+--------------+------+------+------+------+------|
   |  |DC000h |    DE000h    | Open | Open |Closed|Closed|Closed|
   |--+-------+--------------+------+------+------+------+------|
   |  |E0000h |    E2000h    | Open | Open | Open |Closed|Closed|
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         WAIT STATE                         |
   |------------------------------------------------------------|
   |                  Setting                   |      JP4      |
   |--------------------------------------------+---------------|
   |>>        |       System wait states        |     Open      |
   |----------+---------------------------------+---------------|
   |          |        Zero wait states         |    Closed     |
   |------------------------------------------------------------|
   | Note:If 0 wait states is selected, I/O CHRDY must be       |
   | disabled (JP5 open).                                       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         I/O CHRDY                          |
   |------------------------------------------------------------|
   |                Setting                |        JP5         |
   |---------------------------------------+--------------------|
   |>>             |       Disabled        |        Open        |
   |---------------+-----------------------+--------------------|
   |               |        Enabled        |       Closed       |
   |------------------------------------------------------------|
   | Note:If a boot ROM is installed, I/O CHRDY must be enabled |
   | (JP5 closed).                                              |
   |                                                            |
   | If I/O CHRDY is enabled (JP5 closed), System wait states   |
   | must be selected (JP4 open)                                |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                          BOOT ROM                          |
   |------------------------------------------------------------|
   |             Setting             |           JP6            |
   |---------------------------------+--------------------------|
   |>> |          Disabled           |           Open           |
   |---+-----------------------------+--------------------------|
   |   |           Enabled           |          Closed          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         CABLE TYPE                         |
   |------------------------------------------------------------|
   |          Type          |       JP7       |       JP8       |
   |------------------------+-----------------+-----------------|
   |>> |   RG-58A/U 50ohm   |   Pins 1 & 2    |   Pins 1 & 2    |
   |   |      coaxial       |     Closed      |     Closed      |
   |---+--------------------+-----------------+-----------------|
   |   | Unshielded twisted |   PIns 2 & 3    |   PIns 2 & 3    |
   |   |        pair        |     Closed      |     Closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                          TOPOLOGY                          |
   |------------------------------------------------------------|
   |             Topology             |           JP9           |
   |----------------------------------+-------------------------|
   |>> |             Star             |         Closed          |
   |---+------------------------------+-------------------------|
   |   |          Linear Bus          |          Open           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   | LED  | Color |  Status  |            Condition             |
   |------+-------+----------+----------------------------------|
   | LED1 |  Red  |    On    |    Network connection is good    |
   |------+-------+----------+----------------------------------|
   | LED1 |  Red  | Blinking | Network connection is broken or  |
   |      |       |          |     no activity is detected      |
   |------+-------+----------+----------------------------------|
   | LED2 | Green |    On    |      Data is being received      |
   |------+-------+----------+----------------------------------|
   | LED2 | Green |   Off    |    Data is not being received    |
   |------+-------+----------+----------------------------------|
   | LED2 | Green | Blinking |    System power has just been    |
   |      |       |          |             applied              |
   +------------------------------------------------------------+