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# GATEWAY COMMUNICATIONS, INC.
G/ETHERTWIST 8
NIC Type Ethernet
Transfer Rate 10Mbps
Data Bus 8-bit ISA
Topology Linear bus
Star
Wiring Type Unshielded twisted pair
Boot ROM Available
IMG IMG 1
+------------------------------------------------------------+
| BOOT ROM ADDRESS |
|------------------------------------------------------------|
| PROM Address | SW1/4 | SW1/5 | SW1/6 |
|-----------------+--------------+-------------+-------------|
| C4000h - C7FFFh | On | On | On |
|-----------------+--------------+-------------+-------------|
| C8000h - CBFFFh | Off | On | On |
|-----------------+--------------+-------------+-------------|
| CC000h - CFFFFh | On | Off | On |
|-----------------+--------------+-------------+-------------|
| D0000h - D3000h | Off | Off | On |
|-----------------+--------------+-------------+-------------|
| D4000h - D7000h | On | On | Off |
|-----------------+--------------+-------------+-------------|
| D8000h - DBFFFh | Off | On | Off |
|-----------------+--------------+-------------+-------------|
| DC000h - DFFFFh | On | Off | Off |
|-----------------+--------------+-------------+-------------|
| Disabled | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location |
|-------------------------------+----------------------------|
| On-board link test LED | JP9, Pins 1 & 3 |
|-------------------------------+----------------------------|
| Optional link test LED | JP9, Pins 3 & 4 |
|-------------------------------+----------------------------|
| Receive LED | JP9, Pins 5 & 6 |
|-------------------------------+----------------------------|
| Transmit LED | JP9, Pins 7 & 8 |
|-------------------------------+----------------------------|
| Collision LED | JP9, Pins 9 & 10 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT SELECT |
|------------------------------------------------------------|
| IRQ | JP10/A | JP10/B | JP10/C | JP10/D |JP10/E |JP10/F |
|--------+--------+--------+--------+--------+-------+-------|
|»| IRQ5 | Open | Open | Open | Closed | Open | Open |
|-+------+--------+--------+--------+--------+-------+-------|
| | IRQ2 | Closed | Open | Open | Open | Open | Open |
|-+------+--------+--------+--------+--------+-------+-------|
| | IRQ3 | Open | Closed | Open | Open | Open | Open |
|-+------+--------+--------+--------+--------+-------+-------|
| | IRQ4 | Open | Open | Closed | Open | Open | Open |
|-+------+--------+--------+--------+--------+-------+-------|
| | IRQ6 | Open | Open | Open | Open |Closed | Open |
|-+------+--------+--------+--------+--------+-------+-------|
| | IRQ7 | Open | Open | Open | Open | Open |Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| I/O ADDRESS SELECT |
|------------------------------------------------------------|
| Address Range | SW1/1 | SW1/2 | SW1/3 |
|-------------------+-------------+-------------+------------|
| » | 2A0h - 2BFh | On | Off | On |
|---+---------------+-------------+-------------+------------|
| | 260h - 27Fh | On | On | On |
|---+---------------+-------------+-------------+------------|
| | 280h - 29Fh | Off | On | On |
|---+---------------+-------------+-------------+------------|
| | 2E0h - 2FFh | Off | Off | On |
|---+---------------+-------------+-------------+------------|
| | 300h - 31Fh | On | On | Off |
|---+---------------+-------------+-------------+------------|
| | 320h - 33Fh | Off | On | Off |
|---+---------------+-------------+-------------+------------|
| | 380h - 39Fh | On | Off | Off |
|---+---------------+-------------+-------------+------------|
| | 3E0h - 3FFh | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| WAIT STATE |
|------------------------------------------------------------|
| Setting | SW1/7 |
|---------------------------------+--------------------------|
| » | Disabled | Off |
|---+-----------------------------+--------------------------|
| | Enabled | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FACTORY CONFIGURED SETTINGS |
|------------------------------------------------------------|
| Switch | Setting |
|------------------------------+-----------------------------|
| SW1/8 | N/A |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED |
|------------------------------------------------------------|
| Color | Status | Condition |
|--------------+--------------+------------------------------|
| Green | On | Network connection is good |
|--------------+--------------+------------------------------|
| Green | Off | Network connection is broken |
+------------------------------------------------------------+