(TXT) View Source
       
       # CNET TECHNOLOGY, INC.
       
          CN120A
       
          NIC Type         ARCnet                                        
          Transfer Rate    2.5Mbps                                       
          Data Bus         8-bit ISA                                     
          Topology         Linear bus                                    
          Wiring Type      RG-62A/U 93ohm coaxial                        
          Boot ROM         Available                                     
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        NODE ADDRESS                        |
          |------------------------------------------------------------|
          |Node |SW2/1 |SW2/2 |SW2/3 |SW2/4 |SW2/5 |SW2/6 |SW2/7 |SW2/8|
          |-----+------+------+------+------+------+------+------+-----|
          |  0  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A |
          |-----+------+------+------+------+------+------+------+-----|
          |  1  |  On  | Off  | Off  | Off  | Off  | Off  | Off  | Off |
          |-----+------+------+------+------+------+------+------+-----|
          |  2  | Off  |  On  | Off  | Off  | Off  | Off  | Off  | Off |
          |-----+------+------+------+------+------+------+------+-----|
          |  3  |  On  |  On  | Off  | Off  | Off  | Off  | Off  | Off |
          |-----+------+------+------+------+------+------+------+-----|
          |  4  | Off  | Off  |  On  | Off  | Off  | Off  | Off  | Off |
          |-----+------+------+------+------+------+------+------+-----|
          | 251 |  On  |  On  | Off  |  On  |  On  |  On  |  On  | On  |
          |-----+------+------+------+------+------+------+------+-----|
          | 252 | Off  | Off  |  On  |  On  |  On  |  On  |  On  | On  |
          |-----+------+------+------+------+------+------+------+-----|
          | 253 |  On  | Off  |  On  |  On  |  On  |  On  |  On  | On  |
          |-----+------+------+------+------+------+------+------+-----|
          | 254 | Off  |  On  |  On  |  On  |  On  |  On  |  On  | On  |
          |-----+------+------+------+------+------+------+------+-----|
          | 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 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 on the switches and add the |
          |  values of the on switches to obtain the correct node      |
          |  address. (On=1, Off=0)                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                          BOOT ROM                          |
          |------------------------------------------------------------|
          |             Setting             |           JP1            |
          |---------------------------------+--------------------------|
          | » |          Disabled           |           Open           |
          |---+-----------------------------+--------------------------|
          |   |           Enabled           |          Closed          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    INTERRUPT SELECTION                     |
          |------------------------------------------------------------|
          |            IRQ             |              JP2              |
          |----------------------------+-------------------------------|
          |            2/9             |      Pins 9 & 10 closed       |
          |----------------------------+-------------------------------|
          |             3              |       Pins 7 & 8 closed       |
          |----------------------------+-------------------------------|
          |             4              |       Pins 5 & 6 closed       |
          |----------------------------+-------------------------------|
          |             5              |       Pins 3 & 4 closed       |
          |----------------------------+-------------------------------|
          |             7              |       Pins 1 & 2 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |         BASE MEMORY ADDRESS & BOOT ROM ADDRESS         |
          |------------------------------------------------------------|
          |Base Address |Boot ROM Address|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|
          |-------------+----------------+-----+-----+-----+-----+-----|
          |    | C0000h |     C2000h     | On  | On  | On  | On  | On  |
          |----+--------+----------------+-----+-----+-----+-----+-----|
          |    | C4000h |     C6000h     | On  | On  | Off | On  | On  |
          |----+--------+----------------+-----+-----+-----+-----+-----|
          |    | CC000h |     CE000h     | On  | On  | On  | Off | On  |
          |----+--------+----------------+-----+-----+-----+-----+-----|
          |»   | D0000h |     D2000h     | On  | On  | Off | Off | On  |
          |----+--------+----------------+-----+-----+-----+-----+-----|
          |    | D4000h |     D6000h     | On  | On  | On  | On  | Off |
          |----+--------+----------------+-----+-----+-----+-----+-----|
          |    | D8000h |     DA000h     | On  | On  | Off | On  | Off |
          |----+--------+----------------+-----+-----+-----+-----+-----|
          |    | DC000h |     DE000h     | On  | On  | On  | Off | On  |
          |----+--------+----------------+-----+-----+-----+-----+-----|
          |    | E0000h |     E2000h     | On  | On  | Off | Off | Off |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      I/O BASE ADDRESS                      |
          |------------------------------------------------------------|
          |     Address     |    SW1/6     |    SW1/7    |    SW1/8    |
          |-----------------+--------------+-------------+-------------|
          |   |    260h     |      On      |     On      |     On      |
          |---+-------------+--------------+-------------+-------------|
          |   |    290h     |     Off      |     On      |     On      |
          |---+-------------+--------------+-------------+-------------|
          | » |    2E0h     |      On      |     Off     |     On      |
          |---+-------------+--------------+-------------+-------------|
          |   |    2F0h     |     Off      |     Off     |     On      |
          |---+-------------+--------------+-------------+-------------|
          |   |    300h     |      On      |     On      |     Off     |
          |---+-------------+--------------+-------------+-------------|
          |   |    350h     |     Off      |     On      |     Off     |
          |---+-------------+--------------+-------------+-------------|
          |   |    380h     |      On      |     Off     |     Off     |
          |---+-------------+--------------+-------------+-------------|
          |   |    3E0h     |     Off      |     Off     |     Off     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DIAGNOSTIC LED(S)                      |
          |------------------------------------------------------------|
          | LED  | Color |  Status  |            Condition             |
          |------+-------+----------+----------------------------------|
          | LED1 |  Red  |   Off    |         Power is not on          |
          |------+-------+----------+----------------------------------|
          | LED1 |  Red  | Blinking |          Network error           |
          |------+-------+----------+----------------------------------|
          | LED1 |  Red  |    On    |           Power is on            |
          |------+-------+----------+----------------------------------|
          | LED2 | Green |   Off    |        Data is not being         |
          |      |       |          |       transmitted/received       |
          |------+-------+----------+----------------------------------|
          | LED2 | Green |    On    |          Data is being           |
          |      |       |          |       transmitted/received       |
          +------------------------------------------------------------+