
NETWORK INTERFACE TECHNOLOGY CORPORATION

PCARC/50

NIC Type      Arcnet
Transfer Rate 2.5Mbps
Data Bus      8-bit ISA
Topology      Star/Daisy Chain
Wiring Type   Unshielded Twisted Pair
Boot ROM      Available

[Image]

                          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)

               SHARED RAM CONFIGURATION

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

  C0000h      Off        Off        Off        Off

  C4000h      Off        Off        Off        On

  C8000h      Off        Off        On         Off

  CC000h      Off        Off        On         On

  D0000h      Off         On        Off        Off

  D4000h      Off         On        Off        On

  D8000h      Off         On        On         Off

  DC000h      Off         On        On         On

  E0000h       On        Off        Off        Off

  E4000h       On        Off        Off        On

  E8000h       On        Off        On         Off

  EC000h       On        Off        On         On

  F0000h       On         On        Off        Off

  F4000h       On         On        Off        On

  F8000h       On         On        On         Off

  FC000h       On         On        On         On

                   INTERRUPT SELECTION

   IRQ      SW2/4     SW2/5     SW2/6     SW2/7    SW2/8

    2         On       Off       Off       Off      Off

    3        Off       On        Off       Off      Off

    4        Off       Off       On        Off      Off

    5        Off       Off       Off       On       Off

    7        Off       Off       Off       Off      On

                          TIME OUT CONFIGURATION

     Response        Reconfig.       Distance        SW1/1       SW1/2
   (micro 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

                             DIAGNOSTIC LED(S)

       LED              Status                     Condition

      LED1                On               Network connection is good

      LED1             Blinking        Network reconfigurations occuring

      LED1                Off              Network connection is bad

