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       # GATEWAY COMMUNICATIONS, INC.
       
          G/ETHERTWIST 8 ADAPTER
       
          NIC Type         Ethernet                                      
          Transfer Rate    10Mbps                                        
          Data Bus         8-bit ISA                                     
          Topology         Linear Bus                                    
                                                                         
                           Star                                          
          Wiring Type      Shielded twisted pair                         
                                                                         
                           Unshielded twisted pair                       
                                                                         
                           AUI transceiver via DB-15 port                
          Boot ROM         Available                                     
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                     INTERRUPT REQUEST                      |
          |------------------------------------------------------------|
          | IRQ  |  JP2A  |  JP2B  |  JP2C  |  JP2D  |  JP2E  |  JP2F  |
          |------+--------+--------+--------+--------+--------+--------|
          |»| 3  |  Open  | Closed |  Open  |  Open  |  Open  |  Open  |
          |-+----+--------+--------+--------+--------+--------+--------|
          | | 2  | Closed |  Open  |  Open  |  Open  |  Open  |  Open  |
          |-+----+--------+--------+--------+--------+--------+--------|
          | | 4  |  Open  |  Open  | Closed |  Open  |  Open  |  Open  |
          |-+----+--------+--------+--------+--------+--------+--------|
          | | 5  |  Open  |  Open  |  Open  | Closed |  Open  |  Open  |
          |-+----+--------+--------+--------+--------+--------+--------|
          | | 6  |  Open  |  Open  |  Open  |  Open  | Closed |  Open  |
          |-+----+--------+--------+--------+--------+--------+--------|
          | | 7  |  Open  |  Open  |  Open  |  Open  |  Open  | Closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         CABLE TYPE                         |
          |------------------------------------------------------------|
          |                Type                |          JP4          |
          |------------------------------------+-----------------------|
          | » |     RG-58A/U 50ohm coaxial     |   Pins 1 & 2 Closed   |
          |---+--------------------------------+-----------------------|
          |   | AUI transceiver via DB-15 port |   Pins 2 & 3 Closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    LINK INTEGRITY TEST                     |
          |------------------------------------------------------------|
          |           Setting           |             JP5              |
          |-----------------------------+------------------------------|
          | »        |     Enabled      |      Pins 1 & 2 Closed       |
          |----------+------------------+------------------------------|
          |          |     Disabled     |      Pins 2 & 3 Closed       |
          |------------------------------------------------------------|
          | Note:Link Integrity is only used with 10Base-T wiring.     |
          | When using an AUI transciever, the test should be          |
          | disabled.                                                  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      I/O BASE ADDRESS                      |
          |------------------------------------------------------------|
          |    Address     |  SW1/1   |  SW1/2   |  SW1/3   |  SW1/4   |
          |----------------+----------+----------+----------+----------|
          | » |  2A0-2BF   |    On    |   Off    |    On    |    On    |
          |---+------------+----------+----------+----------+----------|
          |   |  280-29F   |    On    |    On    |    On    |    On    |
          |---+------------+----------+----------+----------+----------|
          |   |  2C0-2DF   |    On    |    On    |   Off    |    On    |
          |---+------------+----------+----------+----------+----------|
          |   |  2E0-2FF   |    On    |   Off    |   Off    |    On    |
          |---+------------+----------+----------+----------+----------|
          |   |  300-31F   |    On    |    On    |    On    |   Off    |
          |---+------------+----------+----------+----------+----------|
          |   |  320-33F   |    On    |   Off    |    On    |   Off    |
          |---+------------+----------+----------+----------+----------|
          |   |  340-35F   |    On    |    On    |   Off    |   Off    |
          |---+------------+----------+----------+----------+----------|
          |   |  360-37F   |    On    |   Off    |   Off    |   Off    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      BOOT ROM ADDRESS                      |
          |------------------------------------------------------------|
          |        Address         |      SW1/5      |      SW1/6      |
          |------------------------+-----------------+-----------------|
          | » |    CC000-CFFFFh    |       Off       |       Off       |
          |---+--------------------+-----------------+-----------------|
          |   |    C0000-C3FFFh    |       On        |       On        |
          |---+--------------------+-----------------+-----------------|
          |   |    C4000-C7FFFh    |       Off       |       On        |
          |---+--------------------+-----------------+-----------------|
          |   |    C8000-CBFFFh    |       On        |       Off       |
          +------------------------------------------------------------+
       
 (IMG) IMG 2
          
       
          +------------------------------------------------------------+
          |                     DIAGNOSTIC LED(S)                      |
          |------------------------------------------------------------|
          |    LED    |    Status     |           Condition            |
          |-----------+---------------+--------------------------------|
          |     1     |      On       |  Card is sending random data   |
          |           |               |          (Jabbering)           |
          |-----------+---------------+--------------------------------|
          |     1     |      Off      |  Card is configured correctly  |
          |           |               |   and is operating normally    |
          |-----------+---------------+--------------------------------|
          |     2     |      On       |  Network connection is good 1  |
          |-----------+---------------+--------------------------------|
          |     2     |      Off      |    Card is not connected to    |
          |           |               |           network 1            |
          |-----------+---------------+--------------------------------|
          |     2     |      On       |    Link test is disabled 2     |
          |-----------+---------------+--------------------------------|
          |     2     |   Blinking    | Disabled the link test signal  |
          |           |               |               3                |
          |-----------+---------------+--------------------------------|
          |     3     |   Blinking    |   Data is being transmitted    |
          |-----------+---------------+--------------------------------|
          |     3     |      Off      | Data is not being transmitted  |
          |-----------+---------------+--------------------------------|
          |     4     |   Blinking    |     Data is being received     |
          |-----------+---------------+--------------------------------|
          |     4     |      Off      |   Data is not being received   |
          |------------------------------------------------------------|
          | Note 1 :Used when the Link Test signal is enabled (JP5)    |
          |                                                            |
          | Note 2 :LED remains on when the Link Test signal is        |
          | disabled (JP5)                                             |
          |                                                            |
          | Note 3 :When the Link Test signal is enabled and the card  |
          | is connected to a hub that does not use the                |
          |                                                            |
          | Link Test signal, the user should disable the Link Test    |
          | signal.                                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |         FACTORY CONFIGURED SETTINGS - DO NOT ALTER         |
          |------------------------------------------------------------|
          |      Jumper       |                Setting                 |
          |-------------------+----------------------------------------|
          |        JP1        |       Unknown (Used for Channel        |
          |                   |             configuration)             |
          |------------------------------------------------------------|
          | Note:Link Integrity is only used with 10Base-T wiring.     |
          | When using an AUI transciever, the test should be          |
          | disabled.                                                  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    MISCELLANEOUS NOTES                     |
          |------------------------------------------------------------|
          | Different drivers must be used for the National & the      |
          | Fujitsu chipset cards, they are not interchangeable.       |
          |                                                            |
          | Fujitsu drivers may be used for either 8 or 16 bit Fujitsu |
          | cards, while the National chipset cards require a          |
          | different driver for an 8 or 16 bit card.                  |
          +------------------------------------------------------------+