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# EDIMAX COMPUTER COMPANY
AL-2351
NIC Type Arcnet
Transfer Rate 2.5Mbps
Data Bus 8-bit ISA
Topology Linear bus
Star
Wiring Type Unshielded twisted pair
RG-62A/U 93ohm coaxial
Boot ROM Available
IMG IMG 1
+------------------------------------------------------------+
| NODE ADDRESS SELECTION |
|------------------------------------------------------------|
|Address |SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5|SW1/6|SW1/7|SW1/8|
|--------+------+------+------+------+-----+-----+-----+-----|
| 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 |
|--------+------+------+------+------+-----+-----+-----+-----|
| 5 | Off | 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: A total of 255 node address settings are available. |
| The switches are a binary representation of the decimal |
| node addresses. Switch SW1/1 is the Least Significant Bit |
| and switch SW1/8 is the Most Significant Bit. The switches|
| have the following decimal values: jumper SW1/1=1, |
| SW1/2=2, SW1/=4, SW1/4=8, SW1/5=16, SW1/6=32, SW1/7=64, |
| SW1/8=128.Open the switches and add the values of the off |
| switches to obtain the correct node address. (On=0, Off=1)|
+------------------------------------------------------------+
+------------------------------------------------------------+
| TOPOLOGY |
|------------------------------------------------------------|
| Topology | W5/1 | W5/2 | W5/3 | W5/4 |
|--------------------+---------+---------+---------+---------|
| | Star | Closed | Open | Open | Open |
|---+----------------+---------+---------+---------+---------|
| | Linear bus | Open | Closed | Open | Open |
|---+----------------+---------+---------+---------+---------|
| » | Linear bus | Open | Open | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE I/O ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | SW2/1 | SW2/2 | SW2/3 | SW2/4 | SW2/5 | SW2/6 |
|------------+-------+-------+-------+-------+-------+-------|
| » | 2E0h | Off | On | Off | Off | Off | On |
|----+-------+-------+-------+-------+-------+-------+-------|
| | 2F0h | Off | On | Off | Off | Off | Off |
|----+-------+-------+-------+-------+-------+-------+-------|
| | 300h | Off | Off | On | On | On | On |
|----+-------+-------+-------+-------+-------+-------+-------|
| | 200h | Off | On | On | On | On | On |
|----+-------+-------+-------+-------+-------+-------+-------|
| | 210h | Off | On | On | On | On | Off |
|----+-------+-------+-------+-------+-------+-------+-------|
| | 220h | Off | On | On | On | Off | On |
|----+-------+-------+-------+-------+-------+-------+-------|
| | 230h | Off | On | On | On | Off | Off |
|----+-------+-------+-------+-------+-------+-------+-------|
| | 240h | Off | On | On | Off | On | On |
|----+-------+-------+-------+-------+-------+-------+-------|
| | 3B0h | Off | Off | Off | On | Off | Off |
|----+-------+-------+-------+-------+-------+-------+-------|
| | 3C0h | Off | Off | Off | Off | On | On |
|----+-------+-------+-------+-------+-------+-------+-------|
| | 3D0h | Off | Off | Off | Off | On | Off |
|----+-------+-------+-------+-------+-------+-------+-------|
| | 3E0h | Off | Off | Off | Off | Off | On |
|----+-------+-------+-------+-------+-------+-------+-------|
| | 3F0h | Off | Off | Off | Off | Off | Off |
|------------------------------------------------------------|
| Note: Addresses from 0h to 3F0h are possible, but those |
| below 200h are not normally used. The sum of SW1/1 and |
| SW1/2 represent the first digit. The sum of SW1/3-6 |
| represent the second digit. The last digit is always zero. |
| SW1/1=200h, SW1/2=100h, SW1/3=80h, SW1/4=40h, SW1/5=20h, |
| SW/6=10h. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | W3 |
|-----------------------------------+------------------------|
| » | Com 9026 INTR set to IRQ 2 | Pins 1-2 closed |
|---+-------------------------------+------------------------|
| | Com 9026 INTR set to IRQ 3 | Pins 2-5 closed |
|---+-------------------------------+------------------------|
| | Com 9026 INTR set to IRQ 4 | Pins 8-9 closed |
|---+-------------------------------+------------------------|
| | Com 9026 INTR set to IRQ 5 | Pins 7-8 closed |
|---+-------------------------------+------------------------|
| | Com 9026 INTR set to IRQ 7 | Pins 8-11 closed |
|---+-------------------------------+------------------------|
| | 8253 Timeout 1 set to IRQ2 | Pins 3-6 closed |
|---+-------------------------------+------------------------|
| | 8253 Timeout 0 set to IRQ3 | Pins 5-6 closed |
|---+-------------------------------+------------------------|
| | 8253 Timeout 0 set to IRQ4 | Pins 6-9 closed |
|---+-------------------------------+------------------------|
| | 8253 Timeout 0 set to IRQ5 | Pins 7-10 closed |
|---+-------------------------------+------------------------|
| | 8253 Timeout 0 set to IRQ7 | Pins 10-11 closed |
|---+-------------------------------+------------------------|
| | 8253 Timeout 0 set to IRQ2 | Pins 1-4 closed |
|---+-------------------------------+------------------------|
| | 8253 Timeout 0 set to IRQ3 | Pins 4-5 closed |
|---+-------------------------------+------------------------|
| | 8253 Timeout 0 set to IRQ4 | Pins 9-12 closed |
|---+-------------------------------+------------------------|
| | 8253 Timeout 0 set to IRQ5 | Pins 4-7 closed |
|---+-------------------------------+------------------------|
| | 8253 Timeout 0 set to IRQ7 | Pins 11-12 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESPONSE/RECONFIGURATION |
|------------------------------------------------------------|
| Time | W1 | W2 |
|-----------------------------+---------------+--------------|
| » | 74.7 m Sec/840 mSec | Open | Open |
|---+-------------------------+---------------+--------------|
| | 383.4 m Sec/1680 mSec | Closed | Open |
|---+-------------------------+---------------+--------------|
| | 561.8 m Sec/1680 mSec | Open | Closed |
|---+-------------------------+---------------+--------------|
| | 11118.6 m Sec/1680 mSec | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE MEMORY ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | SW2/7 | SW2/8 | SW2/9 | SW2/10 |
|---------------+----------+----------+----------+-----------|
| » | D000h | Off | Off | On | On |
|---+-----------+----------+----------+----------+-----------|
| | 0000h | On | On | On | On |
|---+-----------+----------+----------+----------+-----------|
| | 1000h | On | On | On | Off |
|---+-----------+----------+----------+----------+-----------|
| | 2000h | On | On | Off | On |
|---+-----------+----------+----------+----------+-----------|
| | 3000h | On | On | Off | Off |
|---+-----------+----------+----------+----------+-----------|
| | 4000h | On | Off | On | On |
|---+-----------+----------+----------+----------+-----------|
| | 5000h | On | Off | On | Off |
|---+-----------+----------+----------+----------+-----------|
| | B000h | Off | On | Off | Off |
|---+-----------+----------+----------+----------+-----------|
| | C000h | Off | Off | On | On |
|---+-----------+----------+----------+----------+-----------|
| | E000h | Off | Off | Off | On |
|---+-----------+----------+----------+----------+-----------|
| | F000h | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| Status | Condition |
|-----------------------+------------------------------------|
| On | Network connection is good |
|-----------------------+------------------------------------|
| Off | Network connection is broken |
|-----------------------+------------------------------------|
| Blinking | Data is being transmitted/received |
+------------------------------------------------------------+