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# STANDARD MICROSYSTEMS CORPORATION
ARCnet PC270E
NIC Type ARCnet
Transfer Rate 2.5Mbps
Data Bus 8-bit ISA
Topology Star
Linear Bus
Wiring Type Unshielded twisted pair
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 | - | - | - | - | - | - | - | - |
|-----+------+------+------+------+------+------+------+-----|
| 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:Note 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 |
|------------------------------------------------------------|
| IRQ | JP1D | JP1E | JP1F | JP1G | JP1H |
|-------+----------+----------+----------+---------+---------|
| 2 | Open | Open | Open | Open | Closed |
|-------+----------+----------+----------+---------+---------|
| 3 | Open | Open | Open | Closed | Open |
|-------+----------+----------+----------+---------+---------|
| 4 | Open | Open | Closed | Open | Open |
|-------+----------+----------+----------+---------+---------|
| 5 | Open | Closed | Open | Open | Open |
|-------+----------+----------+----------+---------+---------|
| 7 | Closed | Open | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE MEMORY ADDRESS & BOOT ROM ADDRESS |
|------------------------------------------------------------|
|Base Address |Boot ROM Address|SW2/1|SW2/2|SW2/3|SW2/4|SW2/5|
|-------------+----------------+-----+-----+-----+-----+-----|
|» | D0000 - | D2000 - D3FFFh | On | Off | Off | On | On |
| | D07FFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | C0000 - | C2000 - C3FFFh | On | On | On | On | On |
| | C07FFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | C0800 - | C2000 - C3FFFh | On | On | On | On | Off |
| | C0FFFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | C1000 - | C2000 - C3FFFh | On | On | On | Off | On |
| | C17FFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | C1800 - | C2000 - C3FFFh | On | On | On | Off | Off |
| | C1FFFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | C4000 - | C6000 - C7FFFh | On | On | Off | On | On |
| | C47FFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | C4800 - | C6000 - C7FFFh | On | On | Off | On | Off |
| | C4FFFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | C5000 - | C6000 - C7FFFh | On | On | Off | Off | On |
| | C57FFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | C5800 - | C6000 - C7FFFh | On | On | Off | Off | Off |
| | C5FFFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | CC000 - | CE000 - CFFFFh | On | Off | On | On | On |
| | CC7FFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | CC800 - | CE000 - CFFFFh | On | Off | On | On | Off |
| | CCFFFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | CD000 - | CE000 - CFFFFh | On | Off | On | Off | On |
| | CD7FFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | CD800 - | CE000 - CFFFFh | On | Off | On | Off | Off |
| | CDFFFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | D0800 - | D2000 - D3FFFh | On | Off | Off | On | Off |
| | D0FFFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | D1000 - | D2000 - D3FFFh | On | Off | Off | Off | On |
| | D17FFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | D1800 - | D2000 - D3FFFh | On | Off | Off | Off | Off |
| | D1FFFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | D4000 - | D6000 - D7FFFh | Off | On | On | On | On |
| | D47FFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | D4800 - | D6000 - D7FFFh | Off | On | On | On | Off |
| | D4FFFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | D5000 - | D6000 - D7FFFh | Off | On | On | Off | On |
| | D57FFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | D5800 - | D6000 - D7FFFh | Off | On | On | Off | Off |
| | D5FFFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | D8000 - | DA000 - DBFFFh | Off | On | Off | On | On |
| | D87FFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | D8800 - | DA000 - DBFFFh | Off | On | Off | On | Off |
| | D8FFFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | D9000 - | DA000 - DBFFFh | Off | On | Off | Off | On |
| | D97FFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | D9800 - | DA000 - DBFFFh | Off | On | Off | Off | Off |
| | D9FFFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | DC000 - | DE000 - DFFFFh | Off | Off | On | On | On |
| | DC7FFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | DC800 - | DE000 - DFFFFh | Off | Off | On | On | Off |
| | DCFFFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | DD000 - | DE000 - DFFFFh | Off | Off | On | Off | On |
| | DD7FFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | DD800 - | DE000 - DFFFFh | Off | Off | On | Off | Off |
| | DDFFFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | E0000 - | E2000 - E2FFFh | Off | Off | Off | On | On |
| | E07FFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | E0800 - | E2000 - E2FFFh | Off | Off | Off | On | Off |
| | E0FFFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | E1000 - | E2000 - E2FFFh | Off | Off | Off | Off | On |
| | E17FFh | | | | | | |
|--+----------+----------------+-----+-----+-----+-----+-----|
| | E1800 - | E2000 - E2FFFh | Off | Off | Off | Off | Off |
| | E1FFFh | | | | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESPONSE AND RECONFIGURATION TIMEOUTS |
|------------------------------------------------------------|
| Response Time | Idle Time | Reconfig. | JP1A | JP1B |
| | | Time | | |
|---------------+-----------+--------------+--------+--------|
| » | 78 m | 86 m | 840 m | Closed | Closed |
|-----+---------+-----------+--------------+--------+--------|
| | 285 m | 316 m | 1680 m | Open | Closed |
|-----+---------+-----------+--------------+--------+--------|
| | 563 m | 624 m | 1680 m | Closed | Open |
|-----+---------+-----------+--------------+--------+--------|
| | 1190 m | 1237 m | 1680 m | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BOOT ROM |
|------------------------------------------------------------|
| Setting | JP1C |
|---------------------------------+--------------------------|
| » | Disabled | Open |
|---+-----------------------------+--------------------------|
| | Enabled | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| I/O BASE ADDRESS |
|------------------------------------------------------------|
| Address | SW1/1 | SW1/2 | SW1/3 |
|---------------+--------------+--------------+--------------|
| 260h | On | On | On |
|---------------+--------------+--------------+--------------|
| 290h | On | On | Off |
|---------------+--------------+--------------+--------------|
| 2E0h | On | Off | On |
|---------------+--------------+--------------+--------------|
| 2F0h | On | Off | Off |
|---------------+--------------+--------------+--------------|
| 300h | Off | On | On |
|---------------+--------------+--------------+--------------|
| 350h | Off | On | Off |
|---------------+--------------+--------------+--------------|
| 380h | Off | Off | On |
|---------------+--------------+--------------+--------------|
| 3E0h | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|------+-------+-------------+-------------------------------|
| LED1 | Red | On/Blinking | Data is being transmitted or |
| | | | receiving |
|------+-------+-------------+-------------------------------|
| LED1 | Red | Off | Data is not being transmitted |
| | | | or receiving |
|------+-------+-------------+-------------------------------|
| LED2 | Green | On | Card is configured correctly |
|------+-------+-------------+-------------------------------|
| LED2 | Green | Blinking | Card is reconfiguring |
|------+-------+-------------+-------------------------------|
| LED2 | Green | Off | Card is defective or not |
| | | | configured correctly |
+------------------------------------------------------------+