OLIVETTI

NPU 9144 (3C505)

NIC Type      Ethernet
Transfer Rate 10Mbps
Data Bus      16-bit ISA
Topology      Linear Bus
Wiring Type   DIX Transceiver via DB-15 port

              RG-58A/U 50ohm coaxial
Boot ROM      Available

[Image]

                                CONNECTIONS

  Purpose                   Location      Purpose              Location

  DIX Transceiver via        PORT 1       RG-58A/U 50ohm        PORT 2
  DB-15 port                              coaxial

                            INTERRUPT SELECTION

    IRQ      SW7/5      SW7/6     SW7/7      SW7/8     SW7/9      SW7/10

  »    3      Open      Open       Open      Open       Open      Closed

       4      Open      Open       Open      Open      Closed      Open

       5      Open      Open       Open     Closed      Open       Open

       6      Open      Open      Closed     Open       Open       Open

       7      Open     Closed      Open      Open       Open       Open

       9     Closed     Open       Open      Open       Open       Open

      10      Open      Open       Open      Open       Open       Open

      11      Open      Open       Open      Open       Open       Open

      12      Open      Open       Open      Open       Open       Open

      14      Open      Open       Open      Open       Open       Open

      15      Open      Open       Open      Open       Open       Open

                            INTERRUPT SELECTION

     IRQ        SW5/1       SW5/2        SW5/3       SW5/4       SW5/5

  »     3        Open        Open        Open        Open         Open

        4        Open        Open        Open        Open         Open

        5        Open        Open        Open        Open         Open

        6        Open        Open        Open        Open         Open

        7        Open        Open        Open        Open         Open

        9        Open        Open        Open        Open         Open

       10       Closed       Open        Open        Open         Open

       11        Open       Closed       Open        Open         Open

       12        Open        Open       Closed       Open         Open

       14        Open        Open        Open        Open        Closed

       15        Open        Open        Open       Closed        Open

                           DMA CHANNEL SELECTION

  Channel     SW5/6     SW5/7      SW7/1     SW7/2     SW7/3      SW7/4

       0     Closed     Closed     Open      Open       Open       Open

  »    1      Open       Open      Open      Open      Closed     Closed

       3      Open       Open     Closed    Closed      Open       Open

       5      Open       Open      Open      Open       Open       Open

       6      Open       Open      Open      Open       Open       Open

       7      Open       Open      Open      Open       Open       Open

                       DMA CHANNEL SELECTION (CON’T)

  Channel     SW5/8     SW5/9     SW5/10    SW5/11     SW5/12     SW5/13

       0      Open       Open      Open      Open       Open       Open

  »    1      Open       Open      Open      Open       Open       Open

       3      Open       Open      Open      Open       Open       Open

       5     Closed     Closed     Open      Open       Open       Open

       6      Open       Open     Closed    Closed      Open       Open

       7      Open       Open      Open      Open      Closed     Closed

    ROM SIZE SELECTION

  Size     SW1      SW2

  64KB     Off      Off

  128KB    Off      Off

  256KB     On      Off

  512KB     On      On

                              BIOS ADDRESS SELECTION

   Address    SW6/1    SW6/2    SW6/3    SW6/4    SW6/5    SW6/6    SW6/7    SW6/8

      C8000h   Open     Open    Closed    Open    Open     Closed   Closed   Open

      CA000h  Closed    Open    Closed    Open    Open     Closed   Closed   Open

  »   CC000h   Open    Closed   Closed    Open    Open     Closed   Closed   Open

      CE000h  Closed   Closed   Closed    Open    Open     Closed   Closed   Open

      D0000h   Open     Open     Open    Closed   Open     Closed   Closed   Open

      E6000h  Closed   Closed    Open     Open    Closed   Closed   Closed   Open

      E8000h   Open     Open    Closed    Open    Closed   Closed   Closed   Open

      EA000h  Closed    Open    Closed    Open    Closed   Closed   Closed   Open

      EC000h   Open    Closed   Closed    Open    Closed   Closed   Closed   Open

      EE000h  Closed   Closed   Closed    Open    Closed   Closed   Closed   Open

         TRANCEIVER CONFIGURATION

       Setting               JP1

   Internal - BNC     Pins 1 & 2 closed

   External - DIX     Pins 3 & 4 closed

  FACTORY CONFIGURED - DO NOT ALTER

   Jumper/Switch        Position

        SW3                Off

                        BASE I/O ADDRESS SELECTION

    Setting      SW4/1      SW4/2     SW4/3     SW4/4     SW4/5    SW4/6

     000h         Off        Off       Off       Off       Off      Off

     100h         Off        Off       Off       Off       On       Off

     200h         Off        Off       Off       Off       Off       On

     300h         Off        Off       Off       Off       On        On