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

   ANET-4, ANET-42

   NIC Type         ARCnet                                        
   Transfer Rate    2.5Mbps                                       
   Data Bus         8-bit ISA                                     
   Topology         Star (ANET-4)                                 
                                                                  
                    Linear Bus (ANET-42)                          
   Wiring Type      RG-62A/U 93ohm coaxial                        
   Boot ROM         Available                                     

<gopher://bitreich.org/I/th99/n/C-D/40323-1.png>
   

   +------------------------------------------------------------+
   |                        NODE ADDRESS                        |
   |------------------------------------------------------------|
   |Node |SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5 |SW1/6 |SW1/7 |SW1/8|
   |-----+------+------+------+------+------+------+------+-----|
   |  0  |  -   |  -   |  -   |  -   |  -   |  -   |  -   |  -  |
   |-----+------+------+------+------+------+------+------+-----|
   |  1  | Off  |  On  |  On  |  On  |  On  |  On  |  On  | On  |
   |-----+------+------+------+------+------+------+------+-----|
   |  2  |  On  | Off  |  On  |  On  |  On  |  On  |  On  | On  |
   |-----+------+------+------+------+------+------+------+-----|
   |  3  | Off  | Off  |  On  |  On  |  On  |  On  |  On  | On  |
   |-----+------+------+------+------+------+------+------+-----|
   |  4  |  On  |  On  | Off  |  On  |  On  |  On  |  On  | On  |
   |-----+------+------+------+------+------+------+------+-----|
   | 251 | Off  | Off  |  On  | Off  | Off  | Off  | Off  | Off |
   |-----+------+------+------+------+------+------+------+-----|
   | 252 |  On  |  On  | Off  | Off  | Off  | Off  | Off  | Off |
   |-----+------+------+------+------+------+------+------+-----|
   | 253 | Off  |  On  | Off  | Off  | Off  | Off  | Off  | Off |
   |-----+------+------+------+------+------+------+------+-----|
   | 254 |  On  | Off  | Off  | Off  | Off  | Off  | Off  | Off |
   |-----+------+------+------+------+------+------+------+-----|
   | 255 | Off  | Off  | Off  | Off  | Off  | Off  | Off  | Off |
   |------------------------------------------------------------|
   |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 1 is the Least Significant Bit and      |
   |  switch 8 is the Most Significant Bit. The switches have   |
   |  the following decimal values: switch 1=1, 2=2, 3=4, 4=8,  |
   |  5=16, 6=32, 7=64, 8=128. Turn off the switches and add the|
   |  values of the off switches to obtain the correct node     |
   |  address. (On=0, off=1)                                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   TIMEOUT CONFIGURATION                    |
   |------------------------------------------------------------|
   |        Response Time         |     JP1      |     JP2      |
   |------------------------------+--------------+--------------|
   |>>         |      74.7us      |     Open     |     Open     |
   |-----------+------------------+--------------+--------------|
   |           |     283.4us      |     Open     |    Closed    |
   |-----------+------------------+--------------+--------------|
   |           |     561.8us      |    Closed    |     Open     |
   |-----------+------------------+--------------+--------------|
   |           |     1118.6us     |    Closed    |    Closed    |
   |------------------------------------------------------------|
   | Note:Timeout is the time required for the network signal   |
   | to make a complete trip around the network. Using a        |
   | longer than necessary timeout will result in network       |
   | degradation                                                |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      I/O BASE ADDRESS                      |
   |------------------------------------------------------------|
   |  Address   |  JP4   |  JP5   |  JP6  |  JP7  |  JP8  | JP9 |
   |------------+--------+--------+-------+-------+-------+-----|
   |    | 260h  | Closed |  Open  | Open  |Closed |Closed |Open |
   |----+-------+--------+--------+-------+-------+-------+-----|
   |    | 280h  | Closed | Closed |Closed | Open  |Closed |Open |
   |----+-------+--------+--------+-------+-------+-------+-----|
   |>>   | 2E0h  | Closed |  Open  | Open  | Open  |Closed |Open |
   |----+-------+--------+--------+-------+-------+-------+-----|
   |    | 2F0h  |  Open  |  Open  | Open  | Open  |Closed |Open |
   |----+-------+--------+--------+-------+-------+-------+-----|
   |    | 300h  | Closed | Closed |Closed |Closed | Open  |Open |
   |----+-------+--------+--------+-------+-------+-------+-----|
   |    | 360h  | Closed |  Open  | Open  |Closed | Open  |Open |
   |------------------------------------------------------------|
   |Note:Jumpers count from the right to left in the diagram.   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     INTERRUPT REQUEST                      |
   |------------------------------------------------------------|
   |   IRQ   |   JP10   |  JP11   |  JP12   |  JP13   |  JP14   |
   |---------+----------+---------+---------+---------+---------|
   |>> |  2  |  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  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      BOOT ROM ADDRESS                      |
   |------------------------------------------------------------|
   |    Address    |  JP15   |  JP16   |  JP17   | JP18  | JP19 |
   |---------------+---------+---------+---------+-------+------|
   |    |  C0000h  | Closed  | Closed  | Closed  | Open  | Open |
   |----+----------+---------+---------+---------+-------+------|
   |    |  C8000h  |  Open   | Closed  | Closed  | Open  | Open |
   |----+----------+---------+---------+---------+-------+------|
   |    |  CC000h  |  Open   |  Open   | Closed  | Open  | Open |
   |----+----------+---------+---------+---------+-------+------|
   |>>  |  D0000h  | Closed  |  Open   | Closed  | Open  | Open |
   |------------------------------------------------------------|
   | Note:Jumpers count from the right to left in the diagram.  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   |  LED   |  Color  |  Status  |          Condition           |
   |--------+---------+----------+------------------------------|
   |  LED1  |   Red   |    On    |  Activity detected on CON1   |
   |--------+---------+----------+------------------------------|
   |  LED1  |   Red   |   Off    | No activity detected on CON1 |
   |--------+---------+----------+------------------------------|
   |  LED2  |   Red   |    On    |  Activity detected on CON2   |
   |--------+---------+----------+------------------------------|
   |  LED2  |   Red   |   Off    | No activity detected on CON2 |
   |--------+---------+----------+------------------------------|
   |  LED3  |   Red   |    On    |  Activity detected on CON3   |
   |--------+---------+----------+------------------------------|
   |  LED3  |   Red   |   Off    | No activity detected on CON3 |
   |--------+---------+----------+------------------------------|
   |  LED4  |   Red   |    On    |  Activity detected on CON4   |
   |--------+---------+----------+------------------------------|
   |  LED4  |   Red   |   Off    | No activity detected on CON4 |
   +------------------------------------------------------------+