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# THOMAS-CONRAD CORPORATION
TC4043
NIC Type Token Ring
Transfer Rate 16Mbps/4Mbps
Data Bus 8-bit ISA/16-bit ISA
Topology Ring
Wiring Type Shielded/Unshielded twisted pair
Boot ROM Available (location unidentified)
IMG IMG 1
+------------------------------------------------------------+
| INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | SW1/7 | SW1/8 |
|------------------+--------------------+--------------------|
| 2/9 | Off | Off |
|------------------+--------------------+--------------------|
| 3 | Off | On |
|------------------+--------------------+--------------------|
| 6 | On | Off |
|------------------+--------------------+--------------------|
| 7 | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RAM SIZE SELECTION |
|------------------------------------------------------------|
| Size | SW2/2 | SW2/3 |
|-------------------+--------------------+-------------------|
| 16KB | On | Off |
|-------------------+--------------------+-------------------|
| 64KB | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE I/O ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | SW2/1 |
|-------------------------------+----------------------------|
| Primary (A20h) | On |
|-------------------------------+----------------------------|
| Alternate (A24h) | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ROM ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | SW1/3 | SW1/4 | SW1/5 | SW1/6 |
|------------+-----------+-----------+-----------+-----------|
| C0000h | Off | Off | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| C2000h | Off | Off | Off | On |
|------------+-----------+-----------+-----------+-----------|
| C4000h | Off | Off | On | Off |
|------------+-----------+-----------+-----------+-----------|
| C6000h | Off | Off | On | On |
|------------+-----------+-----------+-----------+-----------|
| C8000h | Off | On | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| CA000h | Off | On | Off | On |
|------------+-----------+-----------+-----------+-----------|
| CC000h | Off | On | On | Off |
|------------+-----------+-----------+-----------+-----------|
| CE000h | Off | On | On | On |
|------------+-----------+-----------+-----------+-----------|
| D0000h | On | Off | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| D2000h | On | Off | Off | On |
|------------+-----------+-----------+-----------+-----------|
| D4000h | On | Off | On | Off |
|------------+-----------+-----------+-----------+-----------|
| D6000h | On | Off | On | On |
|------------+-----------+-----------+-----------+-----------|
| D8000h | On | On | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| DA000h | On | On | Off | On |
|------------+-----------+-----------+-----------+-----------|
| DC000h | On | On | On | Off |
|------------+-----------+-----------+-----------+-----------|
| DE000h | On | On | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RING SPEED SELECTION |
|------------------------------------------------------------|
| Speed | SW2/4 |
|------------------------------+-----------------------------|
| 4Mbps | Off |
|------------------------------+-----------------------------|
| 16Mbps | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BLOCK DECODE SIZE SELECTION |
|------------------------------------------------------------|
| Size | SW2/8 |
|------------------------------+-----------------------------|
| 16KB | On |
|------------------------------+-----------------------------|
| 128KB | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BOOT ROM SELECTION |
|------------------------------------------------------------|
| Setting | JP1 |
|-------------------------------+----------------------------|
| Disabled | Closed |
|-------------------------------+----------------------------|
| Enabled | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FORCED 8-BIT MODE SELECT |
|------------------------------------------------------------|
| Mode | JP2 |
|-------------------------------+----------------------------|
| 8-bit transfer forced | Closed |
|-------------------------------+----------------------------|
| 16-bit transfer allowed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FACTORY CONFIGURED - DO NOT ALTER |
|------------------------------------------------------------|
| Switch | Setting |
|------------------------------+-----------------------------|
| SW2/5 | On |
|------------------------------+-----------------------------|
| SW2/6 | On |
|------------------------------+-----------------------------|
| SW2/7 | On |
+------------------------------------------------------------+