GATEWAY COMMUNICATIONS, INC.

G/EtherTwist 16 Adapter (NATIONAL CHIPSET)

NIC Type      Ethernet
Transfer Rate 10Mbps
Data Bus      16-bit ISA
Topology      Star

              Linear Bus
Wiring Type   Shielded/Unshielded twisted pair

              AUI transceiver via DB-15 port
Boot ROM      Available

[Image]

                                        INTERRUPT REQUEST

   IRQ     JP1      JP2      JP3      JP4      JP5      JP6      JP7      JP8     JP9      JP10

      2   Closed    Open     Open     Open    Open     Open     Open     Open     Open     Open

  »   3    Open    Closed    Open     Open    Open     Open     Open     Open     Open     Open

      4    Open     Open    Closed    Open    Open     Open     Open     Open     Open     Open

      5    Open     Open     Open    Closed   Open     Open     Open     Open     Open     Open

      6    Open     Open     Open     Open    Closed   Open     Open     Open     Open     Open

      7    Open     Open     Open     Open    Open     Closed   Open     Open     Open     Open

      10   Open     Open     Open     Open    Open     Open     Closed   Open     Open     Open

      11   Open     Open     Open     Open    Open     Open     Open     Closed   Open     Open

      12   Open     Open     Open     Open    Open     Open     Open     Open    Closed    Open

      15   Open     Open     Open     Open    Open     Open     Open     Open     Open    Closed

                            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.

                             I/O BASE ADDRESS

    I/O Address         SW1/1        SW1/2         SW1/3         SW1/4

         280-29F         On            On           On            On

  »      2A0-2BF         On           Off           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

                            BASE MEMORY ADDRESS

          Base Address                  SW1/5                SW1/6

             C0000-C3FFF                 On                    On

             C4000-C7FFF                 Off                   On

             C8000-CBFFF                 On                   Off

  »         CC000- CFFFF                 Off                  Off

                                CABLE TYPE

                   Type                                 JP13

        AUI transeiver via DB-15 port            Pins 2 & 3 Closed

  »        Unshielded twisted pair               Pins 1 & 2 Closed

                            COMPATIBILITY MODE

                   Mode                                 JP11

  »            Compatibility on                   Pins 1 & 2 Closed

               Compatibility off                  Pins 2 & 3 Closed

  Note: If one of the following problems persist after checking all other
  possibilities turn off Compatibility.

  Intermittent failures when booting, system lock up, or continuous
  network error messages.

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                             DIAGNOSTIC LED(S)

              Status                              Condition

      Jabber LED (1) on (Red)           Adapter is continually sending
                                                 random data

   Link test LED (2) on (Green)            Network connection good

  Link test LED (2) blinks (Green)   Wiring error, disabled test jumper

   Transmit LED (3) blinks (Red)          Data is being transmitted

   Receive LED (4) blinks (Red)            Data is being received

                            MISCELLANEOUS NOTES

  Different drivers must be used for the National & the Fujitsu chipset
  cards, & are not interchangeable. Fujitsu adapters 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.