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# STANDARD MICROSYSTEMS CORPORATION
ARCNET PC120
EAGLE TECHNOLOGIES
RX-NET II
NIC Type ARCnet
Transfer Rate 2.5Mbps
Data Bus 8-bit ISA
Topology Star
Wiring Type RG-62A/U 93ohm coaxial
Boot ROM Available
IMG IMG 1
+------------------------------------------------------------+
| NODE ADDRESS SELECTION |
|------------------------------------------------------------|
|Node |SW3/1 |SW3/2 |SW3/3 |SW3/4 |SW3/5 |SW3/6 |SW3/7 |SW3/8|
|-----+------+------+------+------+------+------+------+-----|
| 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) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT REQUEST SELECTION |
|------------------------------------------------------------|
| IRQ | JP1 | JP2 | JP3 | JP4 | JP5 |
|-------+----------+----------+----------+---------+---------|
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| I/O BASE ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | SW2/1 | SW2/2 | SW2/3 | SW2/4 | SW2/5 | SW2/6 |
|---------+--------+--------+--------+-------+-------+-------|
| 200h | Off | On | On | On | On | On |
|---------+--------+--------+--------+-------+-------+-------|
| 250h | Off | On | On | Off | On | Off |
|---------+--------+--------+--------+-------+-------+-------|
| 2A0h | Off | On | Off | On | Off | On |
|---------+--------+--------+--------+-------+-------+-------|
| 2E0h | Off | On | Off | Off | Off | On |
|---------+--------+--------+--------+-------+-------+-------|
| 2F0h | Off | On | Off | Off | Off | Off |
|---------+--------+--------+--------+-------+-------+-------|
| 300h | Off | Off | On | On | On | On |
|---------+--------+--------+--------+-------+-------+-------|
| 350h | Off | Off | On | Off | On | Off |
|---------+--------+--------+--------+-------+-------+-------|
| 3E0h | Off | Off | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUFFER ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | SW1/6 |
|---------+--------+--------+--------+-------+-------+-------|
| C0000h | Off | Off | On | On | On | On |
|---------+--------+--------+--------+-------+-------+-------|
| C4000h | Off | Off | On | On | On | Off |
|---------+--------+--------+--------+-------+-------+-------|
| C8000h | Off | Off | On | On | On | On |
|---------+--------+--------+--------+-------+-------+-------|
| CC000h | Off | Off | On | On | Off | Off |
|---------+--------+--------+--------+-------+-------+-------|
| D0000h | Off | Off | On | Off | On | On |
|---------+--------+--------+--------+-------+-------+-------|
| D4000h | Off | Off | On | Off | On | On |
|---------+--------+--------+--------+-------+-------+-------|
| D8000h | Off | Off | On | Off | Off | On |
|---------+--------+--------+--------+-------+-------+-------|
| DC000h | Off | Off | On | Off | Off | Off |
|---------+--------+--------+--------+-------+-------+-------|
| E0000h | Off | Off | Off | On | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FACTORY CONFIGURED SETTINGS |
|------------------------------------------------------------|
| Switch | Setting |
|------------------------------+-----------------------------|
| SW1/7 | On |
|------------------------------+-----------------------------|
| SW1/8 | On |
+------------------------------------------------------------+