
NETWORK INTERFACE TECHNOLOGY CORPORATION

PCARC-AT

NIC Type      Arcnet
Transfer Rate 2.5Mbps
Data Bus      16-bit ISA
Topology      Star
Wiring Type   RG-62A/U 93ohm coaxial
Boot ROM      Available

[Image]

                       CONNECTIONS

           Purpose                     Location

  NITC active hub connector               J2

                          NODE ADDRESS SELECTION

  Address   SW3/1   SW3/2   SW3/3   SW3/4   SW3/5   SW3/6   SW3/7   SW3/8

    0        On      On      On      On      On      On      On      On

    1        On      On      On      On      On      On      On      Off

    2        On      On      On      On      On      On     Off      On

    3        On      On      On      On      On      On     Off      Off

    4        On      On      On      On      On     Off      On      On

   251      Off     Off     Off     Off     Off      On     Off      Off

   252      Off     Off     Off     Off     Off     Off      On      On

   253      Off     Off     Off     Off     Off     Off      On      Off

   254      Off     Off     Off     Off     Off     Off     Off      On

   255      Off     Off     Off     Off     Off     Off     Off      Off

       Note: A total of 255 node address settings are available. The
       switches are a binary representation of the decimal node
       addresses. Switch SW3/8 is the Least Significant Bit and switch
       SW3/1 is the Most Significant Bit. The switches have the following
       decimal values: switch SW3/8=1, SW3/7=2, SW3/6=4, SW3/5=8,
       SW3/4=16, SW3/3=32, SW3/2=64, SW3/1=128. Turn off the switches and
       add the values of the off switches to obtain the correct node
       address. (on=0, off=1)

                          BANYAN SERVER SELECTION

                 Setting                               SW4/8

               Normal Server                           On

                Banyan Server                           Off

                         SHARED RAM CONFIGURATION

    Address          Banyan      SW1/3      SW1/4      SW1/5      SW1/6
                    Address

       C0000h        0000h        Off        Off        Off        Off

       C4000h        0400h        Off        Off        Off         On

       C8000h        0800h        Off        Off        On         Off

       CC000h        0C00h        Off        Off        On          On

      D0000h        1000h        Off         On        Off        Off

       D4000h        1400h        Off         On        Off         On

       D8000h        1800h        Off         On        On         Off

       DC000h        1C00h        Off         On        On          On

       E0000h        2000h         On        Off        Off        Off

       E4000h        2400h         On        Off        Off         On

       E8000h        2800h         On        Off        On         Off

       EC000h        2C00h         On        Off        On          On

       F0000h        3000h         On         On        Off        Off

       F4000h        3400h         On         On        Off         On

       F8000h        3800h         On         On        On         Off

       FC000h        3C00h         On         On        On          On

                            INTERRUPT SELECTION

   IRQ    SW2   SW2   SW2   SW2   SW2   SW4   SW4   SW4  SW4   SW4    SW4
           4     5     6     7    8     1     2     3     4     5     6

     2   Off   Off   Off   Off   Off   On

      3   On    Off   Off   Off   Off   Off   Off   Off  Off   Off   Off

      4   Off   On    Off   Off   Off   Off   Off   Off  Off   Off   Off

      5   Off   Off   On    Off   Off   Off   Off   Off  Off   Off   Off

      6   Off   Off   Off   On    Off   Off   Off   Off  Off   Off   Off

      7   Off   Off   Off   Off   On    Off   Off   Off  Off   Off   Off

      10  Off   Off   Off   Off   Off   Off   On    Off  Off   Off   Off

      11  Off   Off   Off   Off   Off   Off   Off   On   Off   Off   Off

      12  Off   Off   Off   Off   Off   Off   Off   Off  On    Off   Off

      14  Off   Off   Off   Off   Off   Off   Off   Off  Off   On    Off

      15  Off   Off   Off   Off   Off   Off   Off   Off  Off   Off    On

                          TIME OUT CONFIGURATION

  Response (micro     Reconfig.       Distance        SW1/1       SW1/2
       Sec)             (ms)

        74.7            840          3.8 miles        Off         Off

         283.4          1680         17.5 miles        Off         On

         561.8          1680         35.5 miles        On          Off

        1118.6          1680          71.4miles        On          On

                        BASE I/O ADDRESS SELECTION

    Address       SW1/7       SW1/8       SW2/1       SW2/2       SW2/3

        200h       Off         Off         Off         Off         Off

        210h       Off         Off         Off         Off         On

        220h       Off         Off         Off         On          Off

        230h       Off         Off         Off         On          On

        240h       Off         Off         On          Off         Off

        250h       Off         Off         On          Off         On

        260h       Off         Off         On          On          Off

        270h       Off         Off         On          On          On

        280h       Off          On         Off         Off         Off

        290h       Off          On         Off         Off         On

        2A0h       Off          On         Off         On          Off

        2B0h       Off          On         Off         On          On

        2C0h       Off          On         On          Off         Off

        2D0h       Off          On         On          Off         On

       2E0h       Off          On         On          On          Off

        2F0h       Off          On         On          On          On

        300h        On         Off         Off         Off         Off

        310h        On         Off         Off         Off         On

        320h        On         Off         Off         On          Off

        330h        On         Off         Off         On          On

        340h        On         Off         On          Off         Off

        350h        On         Off         On          Off         On

        360h        On         Off         On          On          Off

        370h        On         Off         On          On          On

        380h        On          On         Off         Off         Off

        390h        On          On         Off         Off         On

        3A0h        On          On         Off         On          Off

        3B0h        On          On         Off         On          On

        3C0h        On          On         On          Off         Off

        3D0h        On          On         On          Off         On

        3E0h        On          On         On          On          Off

        3F0h        On          On         On          On          On

                            BOOT ROM SELECTION

                  Mode                                 SW4/7

                  Disabled                             Off

                   Enabled                               On

  FACTORY CONFIGURED - DO NOT ALTER

      Jumper            Position

        JP1                N/A

        JP2                N/A

        JP3                N/A

        JP4                N/A

        JP5                N/A

        JP6                N/A

        JP7                N/A

                             DIAGNOSTIC LED(S)

       LED              Status                     Condition

      LED1                On               Network connection is good

      LED1             Blinking        Network reconfigurations occuring

      LED1                Off              Network connection is bad

                      MISCELLANEOUS TECHNICAL NOTE

  Note:On some boards the Factory Configured jumpers may not be there.

