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

   ANET-16-1A(REVISION C2)

   NIC Type         ARCnet                                        
   Transfer Rate    2.5-Mbps                                      
   Data Bus         16-bit ISA                                    
   Topology         Linear bus, Star                              
   Wiring Type      RG-58A/U 50ohm coaxial                        
                                                                  
                    Unshielded twisted pair                       
   Boot ROM         Available                                     

<gopher://bitreich.org/I/th99/n/C-D/40755-1.png>
   

   +------------------------------------------------------------+
   |                 BASE MEMORY ADDRESS SELECT                 |
   |------------------------------------------------------------|
   | Address  |  J2/A   |  J2/B   |  J2/C   |  J2/D   |  J2/E   |
   |----------+---------+---------+---------+---------+---------|
   |  C0000h  | Closed  | Closed  | Closed  | Closed  | Closed  |
   |----------+---------+---------+---------+---------+---------|
   |  C4000h  | Closed  | Closed  |  Open   | Closed  | Closed  |
   |----------+---------+---------+---------+---------+---------|
   |  CC000h  | Closed  |  Open   | Closed  | Closed  | Closed  |
   |----------+---------+---------+---------+---------+---------|
   |  D0000h  | Closed  |  Open   |  Open   | Closed  | Closed  |
   |----------+---------+---------+---------+---------+---------|
   |  D4000h  |  Open   | Closed  | Closed  | Closed  | Closed  |
   |----------+---------+---------+---------+---------+---------|
   |  D8000h  |  Open   | Closed  |  Open   | Closed  | Closed  |
   |----------+---------+---------+---------+---------+---------|
   |  DC000h  |  Open   |  Open   | Closed  | Closed  | Closed  |
   |----------+---------+---------+---------+---------+---------|
   |  E0000h  |  Open   |  Open   |  Open   | Closed  | Closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                          BOOT ROM                          |
   |------------------------------------------------------------|
   |             Setting             |           J1/C           |
   |---------------------------------+--------------------------|
   |>> |          Disabled           |           Open           |
   |---+-----------------------------+--------------------------|
   |   |           Enabled           |          Closed          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         CABLE TYPE                         |
   |------------------------------------------------------------|
   |            Type            |      J5       |      J6       |
   |----------------------------+---------------+---------------|
   |>> | RG-58A/U 50ohm coaxial |  Pins 1 & 2   |  Pins 1 & 2   |
   |   |                        |    closed     |    closed     |
   |---+------------------------+---------------+---------------|
   |   |   Unshielded twisted   |  Pins 2 & 3   |  Pins 2 & 3   |
   |   |          pair          |    closed     |    closed     |
   +------------------------------------------------------------+

+----------------------------------------------------------------------+
|                           INTERRUPT SELECT                           |
|----------------------------------------------------------------------|
|  IRQ  | J4/A | J4/B | J4/C | J4/D | J4/E | J4/F | J4/G | J4/H | J4/I |
|-------+------+------+------+------+------+------+------+------+------|
|>>|IRQ2 |Closed| Open | Open | Open | Open | Open | Open | Open | Open |
|-+-----+------+------+------+------+------+------+------+------+------|
| |IRQ3 | Open |Closed| Open | Open | Open | Open | Open | Open | Open |
|-+-----+------+------+------+------+------+------+------+------+------|
| |IRQ4 | Open | Open |Closed| Open | Open | Open | Open | Open | Open |
|-+-----+------+------+------+------+------+------+------+------+------|
| |IRQ5 | Open | Open | Open |Closed| Open | Open | Open | Open | Open |
|-+-----+------+------+------+------+------+------+------+------+------|
| |IRQ7 | Open | Open | Open | Open |Closed| Open | Open | Open | Open |
|-+-----+------+------+------+------+------+------+------+------+------|
| |IRQ10| Open | Open | Open | Open | Open | Open | Open | Open |Closed|
|-+-----+------+------+------+------+------+------+------+------+------|
| |IRQ11| Open | Open | Open | Open | Open | Open | Open |Closed| Open |
|-+-----+------+------+------+------+------+------+------+------+------|
| |IRQ12| Open | Open | Open | Open | Open | Open |Closed| Open | Open |
|-+-----+------+------+------+------+------+------+------+------+------|
| |IRQ15| Open | Open | Open | Open | Open |Closed| Open | Open | Open |
+----------------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     I/O ADDRESS SELECT                     |
   |------------------------------------------------------------|
   |    Address    |     J3/A     |     J3/B     |     J3/C     |
   |---------------+--------------+--------------+--------------|
   |     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     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        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      |      J1/A       |      J1/B       |
   |------------------------+-----------------+-----------------|
   |>>  |      74.7us       |      Open       |      Open       |
   |----+-------------------+-----------------+-----------------|
   |    |      283.4us      |      Open       |     Closed      |
   |----+-------------------+-----------------+-----------------|
   |    |      561.8us      |     Closed      |      Open       |
   |----+-------------------+-----------------+-----------------|
   |    |     1118.6us      |     Closed      |     Closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                          TOPOLOGY                          |
   |------------------------------------------------------------|
   |               Type               |           J7            |
   |----------------------------------+-------------------------|
   |>> |             Star             |         Closed          |
   |---+------------------------------+-------------------------|
   |   |          Linear bus          |          Open           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |            Purpose            |          Location          |
   |-------------------------------+----------------------------|
   |    External LED connector     |            LJ1             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      DIAGNOSTIC LEDS                       |
   |------------------------------------------------------------|
   | LED  | Color |  Status  |            Condition             |
   |------+-------+----------+----------------------------------|
   | LED1 |  Red  | Blinking |   Network connection is broken   |
   |------+-------+----------+----------------------------------|
   | LED1 |  Red  |    On    |    Network connection is good    |
   |------+-------+----------+----------------------------------|
   | LED2 | Green |   Off    |        Data is not being         |
   |      |       |          |       transmitted/received       |
   |------+-------+----------+----------------------------------|
   | LED2 | Green |    On    |          Data is being           |
   |      |       |          |       transmitted/received       |
   +------------------------------------------------------------+