GATEWAY COMMUNICATIONS, INC.
============================

   G/EtherTwist PC-WS Adapter (NATIONAL CHIPSET)

   NIC Type         Ethernet                                      
   Transfer Rate    10Mbps                                        
   Data Bus         8-bit ISA                                     
   Topology         Star                                          
   Wiring Type      Shielded twisted pair                         
                                                                  
                    Unshielded twisted pair                       
                                                                  
                    AUI transceiver via DB-15 port                
   Boot ROM         Available                                     

<gopher://bitreich.org/I/th99/n/E-H/40139-1.png>
   

   +------------------------------------------------------------+
   |                     INTERRUPT REQUEST                      |
   |------------------------------------------------------------|
   | IRQ  |  JP2   |  JP3   |  JP4   |  JP5   |  JP6   |  JP7   |
   |------+--------+--------+--------+--------+--------+--------|
   |>>| 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 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      I/O BASE ADDRESS                      |
   |------------------------------------------------------------|
   |      I/O       |  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   |   Off    |    On    |   Off    |   Off    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    BASE MEMORY ADDRESS                     |
   |------------------------------------------------------------|
   |        Address         |      SW1/5      |      SW1/6      |
   |------------------------+-----------------+-----------------|
   |>> |    CC000- CFFFF    |       Off       |       Off       |
   |---+--------------------+-----------------+-----------------|
   |   |    C0000-C3FFF     |       On        |       On        |
   |---+--------------------+-----------------+-----------------|
   |   |    C4000-C7FFF     |       Off       |       On        |
   |---+--------------------+-----------------+-----------------|
   |   |    C8000-CBFFF     |       On        |       Off       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    LINK INTEGRITY TEST                     |
   |------------------------------------------------------------|
   |           Setting           |             JP31             |
   |-----------------------------+------------------------------|
   |>>        |     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.                                                  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         CABLE TYPE                         |
   |------------------------------------------------------------|
   |        Type         | JP8  | JP9  |JP10 |JP11 |JP12 | JP13 |
   |---------------------+------+------+-----+-----+-----+------|
   |>>|Shielded/Unshielded|Pins 1|Pins 1|Pins |Pins |Pins | Open |
   | |   twisted pair    | & 2  | & 2  |1 & 2|1 & 2|1 & 2|      |
   |-+-------------------+------+------+-----+-----+-----+------|
   | |AUI transceiver via|Pins 2|Pins 2|Pins |Pins |Pins |Closed|
   | |    DB-15 port     | & 3  | & 3  |2 & 3|2 & 3|2 & 3|      |
   |------------------------------------------------------------|
   |Note: Pins designated should be in the closed position.     |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/n/E-H/40139-2.png>
   

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   |           Status           |           Condition           |
   |----------------------------+-------------------------------|
   | Jabber LED (1) on (Red)    |    Adapter is continually     |
   |                            |      sending random data      |
   |----------------------------+-------------------------------|
   | Link test LED (2) on (Red) |    Network connection good    |
   |----------------------------+-------------------------------|
   | Transmit LED (3) blinks    |   Data is being transmitted   |
   | (Red)                      |                               |
   |----------------------------+-------------------------------|
   | Receive LED (4) on (Red)   |    Data is being received     |
   |------------------------------------------------------------|
   | Note: When using the AUI port, the LEDs are not            |
   | functional.                                                |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    MISCELLANEOUS NOTES                     |
   |------------------------------------------------------------|
   | The PC adapter can be used in a file server or a work      |
   | station.                                                   |
   |                                                            |
   | The PC-WS adapter can be used in a work station only.      |
   |                                                            |
   | 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.                  |
   +------------------------------------------------------------+