
STANDARD MICROSYSTEMS CORPORATION

ARCNET PC500

NIC Type      ARCnet
Transfer Rate 2.5Mbps
Data Bus      16-bit ISA
Topology      Star

              Linear Bus
Wiring Type   RG-62A/U 93ohm coaxial
Boot ROM      Not available

[Image]

                               NODE ADDRESS

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

   0       -       -        -       -       -        -       -        -

   1      Off      On      On      On       On      On       On      On

   2      On      Off      On      On       On      On       On      On

   3      Off     Off      On      On       On      On       On      On

   4      On       On      Off     On       On      On       On      On

  251     Off     Off      On      Off     Off      Off     Off      Off

  252     On       On      Off     Off     Off      Off     Off      Off

  253     Off      On      Off     Off     Off      Off     Off      Off

  254     On      Off      Off     Off     Off      Off     Off      Off

  255     Off     Off      Off     Off     Off      Off     Off      Off

  Note: Node address 0 is used for messaging between nodes and must not
  be used.

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

                  RESPONSE &AMP; RECONFIGURATION TIMEOUTS

  Response Time     Idle Time      Reconfig.        JP2A          JP2B
                                     Time

        78s         86s           840ms         Closed        Closed

        285s         316s         1680ms         Closed         Open

        563s         624s         1680ms          Open         Closed

        1190s       1237s         1680ms          Open          Open

   TOPOLOGY CONFIGURATION

   Topology        JP6

     Star        Closed

  Linear Bus      Open

                             I/O BASE ADDRESS

   Address      SW1/1     SW1/2     SW1/3     SW1/4     SW1/5      SW1/6

      300h      On        On         On        On       Off        Off

       200h      On        On         On        On        On        Off

       210h      Off       On         On        On        On        Off

       220h      On        Off        On        On        On        Off

       230h      Off       Off        On        On        On        Off

       240h      On        On        Off        On        On        Off

       250h      Off       On        Off        On        On        Off

       260h      On        Off       Off        On        On        Off

       270h      Off       Off       Off        On        On        Off

       280h      On        On         On       Off        On        Off

       290h      Off       On         On       Off        On        Off

       2A0h      On        Off        On       Off        On        Off

       2B0h      Off       Off        On       Off        On        Off

       2C0h      On        On        Off       Off        On        Off

       2D0h      Off       On        Off       Off        On        Off

       2E0h      On        Off       Off       Off        On        Off

       2F0h      Off       Off       Off       Off        On        Off

       310h      Off       On         On        On       Off        Off

       320h      On        Off        On        On       Off        Off

       330h      Off       Off        On        On       Off        Off

       340h      On        On        Off        On       Off        Off

       350h      Off       On        Off        On       Off        Off

       360h      On        Off       Off        On       Off        Off

       370h      Off       Off       Off        On       Off        Off

       380h      On        On         On       Off       Off        Off

       390h      Off       On         On       Off       Off        Off

       3A0h      On        Off        On       Off       Off        Off

       3B0h      Off       Off        On       Off       Off        Off

       3C0h      On        On        Off       Off       Off        Off

       3D0h      Off       On        Off       Off       Off        Off

       3E0h      On        Off       Off       Off       Off        Off

       3F0h      Off       Off       Off       Off       Off        Off

                INTERRUPT REQUEST

   IRQ      SW1/7     SW1/8    SW1/9     SW1/10

   2/9       Off       On        On       Off

    3        Off       Off       On        On

    4        On        On       Off        On

    5        Off       On       Off        On

    7        Off       Off      Off        On

    10       On        Off       On       Off

    11       Off       Off       On       Off

    12       On        On       Off       Off

  FACTORY CONFIGURED SETTINGS

     Switch         Setting

     SW2/1             On

     SW2/2             On

     SW2/3            Off

     SW2/4             On

     SW2/5             On

     SW2/6             On

                             DIAGNOSTIC LED(S)

    LED       Color        Status                   Condition

   LED1        Red           On           Card is being accessed by host
                                                    computer

   LED1        Red           Off          Card is not being accessed by
                                                  host computer

   LED2       Green          On                   Data is being
                                              transmitted/received

   LED2       Green          Off                Data is not being
                                              transmitted/received

   LED2       Green       Blinking          Network is reconfiguring

