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# THOMAS-CONRAD CORPORATION
TC6242
NIC Type ARCnet
Transfer Rate 2.5Mbps
Data Bus 8-bit ISA
Topology Star
Wiring Type RG62A/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/|SW2/|
| | | | | | | | 7 | 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 |
|------------------------------------------------------------|
| IRQ | JP1 | JP2 | JP3 | JP4 | JP5 |
|---------+----------+---------+---------+---------+---------|
| » | 2 | Open | Open | Open | Open | Closed |
|---+-----+----------+---------+---------+---------+---------|
| | 3 | Closed | Open | Open | Open | Open |
|---+-----+----------+---------+---------+---------+---------|
| | 4 | Open | Closed | Open | Open | Open |
|---+-----+----------+---------+---------+---------+---------|
| | 5 | Open | Open | Closed | Open | Open |
|---+-----+----------+---------+---------+---------+---------|
| | 7 | Open | Open | Open | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CABLE LENGTH |
|------------------------------------------------------------|
| Length | JP6 | JP7 |
|----------------------------------+------------+------------|
| » | Under 20,000 feet | Open | Open |
|-------+--------------------------+------------+------------|
| | Greater than 20,000 feet | Closed | Closed |
|------------------------------------------------------------|
| Note: All NICs on the network must have this opition set |
| the same. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE MEMORY ADDRESS |
|------------------------------------------------------------|
| Address | SW1/ 1 | SW1/ | SW1/ | SW1/ | SW1/ | SW1/ |
| | | 2 | 3 | 4 | 5 | 6 |
|-----------+--------+-------+-------+-------+-------+-------|
| » | D000h | Off | Off | On | Off | On | On |
|---+-------+--------+-------+-------+-------+-------+-------|
| | C000h | Off | Off | On | On | On | On |
|---+-------+--------+-------+-------+-------+-------+-------|
| | C400h | Off | Off | On | On | On | Off |
|---+-------+--------+-------+-------+-------+-------+-------|
| | C800h | Off | Off | On | On | Off | On |
|---+-------+--------+-------+-------+-------+-------+-------|
| | CC00h | Off | Off | On | On | Off | Off |
|---+-------+--------+-------+-------+-------+-------+-------|
| | D400h | Off | Off | On | Off | On | Off |
|---+-------+--------+-------+-------+-------+-------+-------|
| | D800h | Off | Off | On | Off | Off | On |
|---+-------+--------+-------+-------+-------+-------+-------|
| | DC00h | Off | Off | On | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPATABILITY MODE |
|------------------------------------------------------------|
| Setting | SW1/ 8 |
|------------------------------------------+-----------------|
| » | Enhanced mode | On |
|------------+-----------------------------+-----------------|
| | Compatible mode | Off |
|------------------------------------------------------------|
| Note: Enhanced mode optimizes performance and minimizes |
| conflicts of your hardware by using a Thomas-Conrad |
+------------------------------------------------------------+
+------------------------------------------------------------+
| I/O BASE ADDRESS |
|------------------------------------------------------------|
| Address | SW3/ 3 | SW3/ 4 | SW3/ | SW3/ | SW3/ | SW3/ |
| | | | 5 | 6 | 7 | 8 |
|----------+--------+--------+-------+-------+-------+-------|
| » | 2E0h | Off | On | Off | Off | Off | On |
|---+------+--------+--------+-------+-------+-------+-------|
| | 2F0h | Off | On | Off | Off | Off | Off |
|---+------+--------+--------+-------+-------+-------+-------|
| | 300h | Off | Off | On | On | On | On |
|---+------+--------+--------+-------+-------+-------+-------|
| | 310h | Off | Off | On | On | On | Off |
|---+------+--------+--------+-------+-------+-------+-------|
| | 320h | Off | Off | On | On | Off | On |
|---+------+--------+--------+-------+-------+-------+-------|
| | 330h | Off | Off | On | On | Off | Off |
|---+------+--------+--------+-------+-------+-------+-------|
| | 340h | Off | Off | On | Off | On | On |
|---+------+--------+--------+-------+-------+-------+-------|
| | 350h | Off | Off | On | Off | On | Off |
|---+------+--------+--------+-------+-------+-------+-------|
| | 360h | Off | Off | On | Off | Off | On |
|---+------+--------+--------+-------+-------+-------+-------|
| | 370h | Off | Off | On | Off | Off | Off |
|---+------+--------+--------+-------+-------+-------+-------|
| | 380h | Off | Off | Off | On | On | On |
|---+------+--------+--------+-------+-------+-------+-------|
| | 390h | Off | Off | Off | On | On | Off |
|---+------+--------+--------+-------+-------+-------+-------|
| | 3A0h | Off | Off | Off | On | Off | 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: SW3/ 1 & SW3/ 2 are always in the on position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Status | Condition |
|--------+---------+-----------------------------------------|
| LED1 | On | Data is being transmitted/received. |
|--------+---------+-----------------------------------------|
| LED1 | Off | Data is not being transmitted/received. |
+------------------------------------------------------------+