BLACK BOX CORPORATION

CONNEX 105, LE1021C

NIC Type      Ethernet
Transfer Rate 10Mbps
Data Bus      16-bit ISA
Topology      Linear Bus
Wiring Type   RG-58A/U 50ohm coaxial

              AUI transceiver via DB-15 port
Boot ROM      Available

[Image]

                    I/O BASE ADDRESS & BOOT ROM ADDRESS

    I/O Address      Boot ROM Address          W1               W3

        300h           C8000-C8FFFh          Closed           Closed

        320h           CC000-CFFFFh          Closed            Open

        340h           D0000-D3FFFh           Open            Closed

        360h           D4000-D7FFFh           Open             Open

                                 BOOT ROM

                 Setting                                W2

  »               Disabled                             Open

                   Enabled                            Closed

                                WAIT STATE

                Setting                                 W4

  »             0 wait states                          Open

                1 wait state                          Closed

                                CABLE TYPE

             Type                     W5 & W13             W6 - W11

  »    RG-58A/U 50ohm coaxial    Pins 2 & 3 Closed     Pins 2 & 3 Closed

         AUI transceiver via     Pins 1 & 2 Closed     Pins 1 & 2 Closed
             DB-15 port

                      SIGNAL QUALITY ERROR (SQE) TEST

                Setting                                 W12

  »                Enabled                       Pins 2 & 3 Closed

                  Disabled                       Pins 1 & 2 Closed

  Note:Signal Quality Error (SQE) is a test of the collision circuitry
  and path.

                                   DMA CHANNELS

  Channel    W14      W15      W16      W17      W18      W19      W23      W24

  »   DMA3   Open     Open     Open     Open    Open     Open     Closed   Closed

      DMA5   Open     Open     Open     Open    Closed   Closed   Open     Open

      DMA6   Open     Open    Closed   Closed   Open     Open     Open     Open

      DMA7  Closed   Closed    Open     Open    Open     Open     Open     Open

                             INTERRUPT REQUEST

        IRQ              W20           W21          W22           W25

        Disabled         Open         Open          Open         Open

           2/9           Open         Open          Open        Closed

  »         3           Closed        Open          Open         Open

            4            Open        Closed         Open         Open

            5            Open         Open         Closed        Open