(TXT) View Source
       
       # GATEWAY COMMUNICATIONS, INC.
       
          G/NET (REV.03 ONLY)
       
          NIC Type         G-Net                                         
          Transfer Rate    2.5Mbps                                       
          Data Bus         8-bit ISA                                     
          Topology         Linear Bus                                    
          Wiring Type      RG--11/U 75ohm coaxial                        
                                                                         
                           RG-59/U 75ohm coaxial                         
                                                                         
                           RG-62A/U 93ohm coaxial                        
          Boot ROM         Not available (optional card required)        
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                         CONNECTORS                         |
          |------------------------------------------------------------|
          |            Purpose            |          Location          |
          |-------------------------------+----------------------------|
          |      Piggy-back Keycard       |            CN1             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        NODE ADDRESS                        |
          |------------------------------------------------------------|
          |Node |SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5 |SW1/6 |SW1/7 |SW1/8|
          |-----+------+------+------+------+------+------+------+-----|
          |  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.                                                  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         CABLE TYPE                         |
          |------------------------------------------------------------|
          |                     Type                     |     JP1     |
          |----------------------------------------------+-------------|
          | »       |   RG11/U 75ohm or RG-59/U 75ohm    |   Closed    |
          |---------+------------------------------------+-------------|
          |         |           RG-62A/U 93ohm           |    Open     |
          |------------------------------------------------------------|
          | Note:All NICs on the network must use the same cable type  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     INTERRUPT REQUEST                      |
          |------------------------------------------------------------|
          |       IRQ        |        JP2         |        JP3         |
          |------------------+--------------------+--------------------|
          |   |      2       |        Open        | Pins 2 & 3 Closed  |
          |---+--------------+--------------------+--------------------|
          |   |      3       | Pins 1 & 2 Closed  |        Open        |
          |---+--------------+--------------------+--------------------|
          | » |      4       | Pins 2 & 3 Closed  |        Open        |
          |---+--------------+--------------------+--------------------|
          |   |      5       |        Open        | Pins 1 & 2 Closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 BASE MEMORY BUFFER ADDRESS                 |
          |------------------------------------------------------------|
          |    Address     |  SW2/1   |  SW2/2   |  SW2/3   |  SW2/4   |
          |----------------+----------+----------+----------+----------|
          |   |   50000h   |   Off    |    On    |   Off    |    On    |
          |---+------------+----------+----------+----------+----------|
          |   |   60000h   |    On    |   Off    |   Off    |    On    |
          |---+------------+----------+----------+----------+----------|
          |   |   70000h   |   Off    |   Off    |   Off    |    On    |
          |---+------------+----------+----------+----------+----------|
          |   |   80000h   |    On    |    On    |    On    |   Off    |
          |---+------------+----------+----------+----------+----------|
          |   |   90000h   |   Off    |    On    |    On    |   Off    |
          |---+------------+----------+----------+----------+----------|
          |   |   A0000h   |    On    |   Off    |    On    |   Off    |
          |---+------------+----------+----------+----------+----------|
          |   |   C0000h   |    On    |    On    |   Off    |   Off    |
          |---+------------+----------+----------+----------+----------|
          | » |   D0000h   |   Off    |    On    |   Off    |   Off    |
          |---+------------+----------+----------+----------+----------|
          |   |   E0000h   |    On    |   Off    |   Off    |   Off    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      I/O BASE ADDRESS                      |
          |------------------------------------------------------------|
          |    Address     |  SW2/5   |  SW2/6   |  SW2/7   |  SW2/8   |
          |----------------+----------+----------+----------+----------|
          |   | 280h-287h  |    On    |    On    |    On    |    On    |
          |---+------------+----------+----------+----------+----------|
          |   | 290h-297h  |   Off    |    On    |    On    |    On    |
          |---+------------+----------+----------+----------+----------|
          |   | 2A0h-2A7h  |    On    |   Off    |    On    |    On    |
          |---+------------+----------+----------+----------+----------|
          |   | 2B0h-2B7h  |   Off    |   Off    |    On    |    On    |
          |---+------------+----------+----------+----------+----------|
          |   | 200h-207h  |    On    |    On    |   Off    |    On    |
          |---+------------+----------+----------+----------+----------|
          |   | 2D0h-2D7h  |   Off    |    On    |   Off    |    On    |
          |---+------------+----------+----------+----------+----------|
          | » | 2E0h-2E7h  |    On    |    On    |    On    |    On    |
          |---+------------+----------+----------+----------+----------|
          |   | 2F0h-2F7h  |   Off    |   Off    |   Off    |    On    |
          |---+------------+----------+----------+----------+----------|
          |   | 300h-307h  |    On    |    On    |    On    |   Off    |
          |---+------------+----------+----------+----------+----------|
          |   | 310h-317h  |   Off    |    On    |    On    |   Off    |
          |---+------------+----------+----------+----------+----------|
          |   | 320h-327h  |    On    |   Off    |    On    |   Off    |
          |---+------------+----------+----------+----------+----------|
          |   | 330h-337h  |   Off    |   Off    |    On    |   Off    |
          |---+------------+----------+----------+----------+----------|
          |   | 340h-347h  |    On    |    On    |   Off    |   Off    |
          |---+------------+----------+----------+----------+----------|
          |   | 350h-357h  |   Off    |    On    |   Off    |   Off    |
          |---+------------+----------+----------+----------+----------|
          |   | 360h-367h  |    On    |   Off    |   Off    |   Off    |
          |---+------------+----------+----------+----------+----------|
          |   | 370h-377h  |   Off    |   Off    |   Off    |   Off    |
          +------------------------------------------------------------+