TIARA COMPUTER SYSTEMS, INC.

LanCard A-286 FO

NIC Type      ARCnet
Transfer Rate 2.5Mbps
Data Bus      8-bit ISA
Topology      Star
Wiring Type   200µs
Boot ROM      Available

[Image]

                               NODE ADDRESS

  Node   SW1/1    SW1/2   SW1/3   SW1/4    SW1/5   SW1/6    SW1/7   SW1/8

   0       -       -        -       -       -        -       -        -

   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: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
       8 is the Least Significant Bit and switch 1 is the Most
       Significant Bit. The switches have the following decimal values:
       switch 8=1, 7=2, 6=4, 5=8, 4=16, 3=32, 2=64, 1=128. Turn off the
       switches and add the values of the off switches to obtain the
       correct node address. (On=0, off=1)

                             DIAGNOSTIC LED(S)

      LED               Status                     Condition

       L1                Off             Data is not being transmitted

       L1              Blinking              Card is reconfiguring

       L1                 On            Card is operating normally on the
                                                    network

  Note:If either of the first two conditions persists, a hardware failure
  exists.

                             INTERRUPT REQUEST

    IRQ          JP1         JP2          JP3         JP4          JP5

  »     2      Closed        Open        Open         Open        Open

        3       Open        Closed       Open         Open        Open

        4       Open         Open       Closed        Open        Open

        5       Open         Open        Open        Closed       Open

        7       Open         Open        Open         Open       Closed

                             I/O BASE ADDRESS

   Address     JP6       JP7       JP8        JP9       JP10       JP11

  »   2E0h     Open    Closed      Open      Open       Open      Closed

      280h     Open    Closed      Open     Closed     Closed     Closed

      2F0h     Open    Closed      Open      Open       Open       Open

      300h     Open     Open      Closed    Closed     Closed     Closed

                             BOOT ROM ADDRESS

    Address        JP12       JP13       JP14         JP15        JP16

  »     D0OOH      Open       Open      Closed        Open       Closed

        C0OOH      Open       Open      Closed       Closed      Closed

        C8OOH      Open       Open      Closed       Closed       Open

        D8OOH      Open       Open      Closed        Open        Open

                      EXTENDED TIMEOUT CONFIGURATION

    Distance       Response      Reconfiguration       JP17       JP18
                     Time

  »   4.8 miles     74.7µs            840ms            Open       Open

        21.0        263.4µs          1680ms           Closed      Open
       miles

        42.5        561.8µs          1680ms            Open      Closed
       miles

        85.6       1118.6µs          1680ms           Closed     Closed
       miles

  Note:The distance given is the maximum distance between the two
  furthest nodes on the network.