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# UNIDENTIFIED
B-666
NIC Type ARCnet
Network Transfer Rate 2.5Mbps
Data Bus 8-bit ISA
Topology Star
Wiring Type RG-62A/U 93ohm coaxial
RG-58A/U 50ohm coaxial
Boot ROM Available
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|----------------------+-------+---------------------+-------|
| RG-58A/U 50ohm | CN1 | RG-62A/U 93ohm | CN2 |
| coaxial | | coaxial | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------------+-------+-----------|
| Boot ROM enabled | JP1 | Closed |
|----------------------------------------+-------+-----------|
| Boot ROM disabled | JP1 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| STATION NODE ADDRESS SELECTION |
|------------------------------------------------------------|
|Node |SW2/1 |SW2/2 |SW2/3 |SW2/4 |SW2/5 |SW2/6 |SW2/7 |SW2/8|
|-----+------+------+------+------+------+------+------+-----|
| 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 base address settings are |
| available. The switches are a binary representation of |
| the decimal memory addresses. SW1/8 is the Most |
| Significant Bit and switch SW1/1 is the Least |
| Significant Bit. Turn off the switches and add the |
| values of the switches to obtain the correct memory |
| address. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ROM ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | PROM Address |SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|
|---------------+--------------+-----+-----+-----+-----+-----|
|C:0000-C:07FFh |C:2000-C:3FFFh| On | On | On | On | On |
|---------------+--------------+-----+-----+-----+-----+-----|
|C:0800-C:0FFFh |C:2000-C:3FFFh| Off | On | On | On | On |
|---------------+--------------+-----+-----+-----+-----+-----|
|C:1000-C:17FFh |C:2000-C:3FFFh| On | Off | On | On | On |
|---------------+--------------+-----+-----+-----+-----+-----|
|C:1800-C:1FFFh |C:2000-C:3FFFh| Off | Off | On | On | On |
|---------------+--------------+-----+-----+-----+-----+-----|
|C:4000-C:47FFh |C:6000-C:7FFFh| On | On | Off | On | On |
|---------------+--------------+-----+-----+-----+-----+-----|
|C:4800-C:4FFFh |C:6000-C:7FFFh| Off | On | Off | On | On |
|---------------+--------------+-----+-----+-----+-----+-----|
|C:5000-C:57FFh |C:6000-C:7FFFh| On | Off | Off | On | On |
|---------------+--------------+-----+-----+-----+-----+-----|
|C:5800-C:5FFFh |C:6000-C:7FFFh| Off | Off | Off | On | On |
|---------------+--------------+-----+-----+-----+-----+-----|
|C:C000-C:C7FFh |C:E000-C:FFFFh| On | On | On | Off | On |
|---------------+--------------+-----+-----+-----+-----+-----|
|C:C800-C:CFFFh |C:E000-C:FFFFh| Off | On | On | Off | On |
|---------------+--------------+-----+-----+-----+-----+-----|
|C:D000-C:D7FFh |C:E000-C:FFFFh| On | Off | On | Off | On |
|---------------+--------------+-----+-----+-----+-----+-----|
|C:D800-C:DFFFh |C:E000-C:FFFFh| Off | Off | On | Off | On |
|---------------+--------------+-----+-----+-----+-----+-----|
|D:0000-D:07FFh |D:2000-D:3FFFh| On | On | Off | Off | On |
|---------------+--------------+-----+-----+-----+-----+-----|
|D:0800-D:0FFFh |D:2000-D:3FFFh| Off | On | Off | Off | On |
|---------------+--------------+-----+-----+-----+-----+-----|
|D:1000-D:17FFh |D:2000-D:3FFFh| On | Off | Off | Off | On |
|---------------+--------------+-----+-----+-----+-----+-----|
|D:1800-D:1FFFh |D:2000-D:3FFFh| Off | Off | Off | Off | On |
|---------------+--------------+-----+-----+-----+-----+-----|
|D:4000-D:47FFh |D:6000-D:7FFFh| On | On | On | On | Off |
|---------------+--------------+-----+-----+-----+-----+-----|
|D:4800-D:4FFFh |D:6000-D7FFFh | Off | On | On | On | Off |
|---------------+--------------+-----+-----+-----+-----+-----|
|D:5000-D:57FFh |D:6000-D:7FFFh| On | Off | On | On | Off |
|---------------+--------------+-----+-----+-----+-----+-----|
|D:5800-D:5FFFh |D:6000-D:7FFFh| Off | Off | On | On | Off |
|---------------+--------------+-----+-----+-----+-----+-----|
|D:8000-D:87FFh |D:A000-D:BFFFh| On | On | Off | On | Off |
|---------------+--------------+-----+-----+-----+-----+-----|
|D:8800-D:8FFFh |D:A000-D:BFFFh| Off | On | Off | On | Off |
|---------------+--------------+-----+-----+-----+-----+-----|
|D:9000-D:97FFh |D:A000-D:BFFFh| On | Off | Off | On | Off |
|---------------+--------------+-----+-----+-----+-----+-----|
|D:9800-D:9FFFh |D:A000-D:BFFFh| Off | Off | Off | On | Off |
|---------------+--------------+-----+-----+-----+-----+-----|
|D:C000-D:C7FFh |D:E000-D:FFFFh| On | On | On | Off | Off |
|---------------+--------------+-----+-----+-----+-----+-----|
|D:C800-D:CFFFh |D:E000-D:FFFFh| Off | On | On | Off | Off |
|---------------+--------------+-----+-----+-----+-----+-----|
|D:D000-D:D7FFh |D:E000-D:FFFFh| On | Off | On | Off | Off |
|---------------+--------------+-----+-----+-----+-----+-----|
|D:D800-D:DFFFh |D:E000-D:FFFFh| Off | Off | On | Off | Off |
|---------------+--------------+-----+-----+-----+-----+-----|
|E:0000-E:07FFh |E:2000-E:3FFFh| On | On | Off | Off | Off |
|---------------+--------------+-----+-----+-----+-----+-----|
|E:0800-E:0FFFh |E:2000-E:3FFFh| Off | On | Off | Off | Off |
|---------------+--------------+-----+-----+-----+-----+-----|
| E:1000-E17FFh |E:2000-E:3FFFh| On | Off | Off | Off | Off |
|---------------+--------------+-----+-----+-----+-----+-----|
|E:1800-E:1FFFh |E:2000-E:3FFFh| Off | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE I/O ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | SW1/6 | SW1/7 | SW1/8 |
|---------------+--------------+--------------+--------------|
| 260-26Fh | On | On | On |
|---------------+--------------+--------------+--------------|
| 290-29Fh | Off | On | On |
|---------------+--------------+--------------+--------------|
| 2E0-2EFh | On | Off | On |
|---------------+--------------+--------------+--------------|
| 2F0-2FFh | Off | Off | On |
|---------------+--------------+--------------+--------------|
| 300-30Fh | On | On | Off |
|---------------+--------------+--------------+--------------|
| 350-35Fh | Off | On | Off |
|---------------+--------------+--------------+--------------|
| 380-38Fh | On | Off | Off |
|---------------+--------------+--------------+--------------|
| 3E0-3EFh | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| Note: Jumper JP2 sets the interrupt line, however the |
| exact configuration is unidentified. |
| |
| The purpose of jumper JP3 is unidentified. |
+------------------------------------------------------------+