SVEC COMPUTER CORPORATION

FD0464 ARCBOARD16

NIC Type      Arcnet
Transfer Rate 2.5Mbps
Data Bus      16-bit ISA
Topology      Linear Bus

              Star
Wiring Type   RG-62A/U 93ohm coaxial

              Unshielded twisted pair
Boot ROM      Available

[Image]

                          NODE ADDRESS SELECTION

  Address   SW2/1   SW2/2   SW2/3   SW2/4   SW2/5   SW2/6   SW2/7   SW2/8

    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

    5       Off      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: A total of 255 node address settings are available. The
       switches are a binary representation of the decimal node
       addresses. Switch SW2/1 is the Least Significant Bit and switch
       SW2/8 is the Most Significant Bit. The switches have the following
       decimal values: switch SW2/1=1, SW2/2=2, SW2/3=4, SW2/4=8,
       SW2/5=16, SW2/6=32, SW2/7=64, SW2/8=128.Turn off the switches and
       add the values of the off switches to obtain the correct node
       address. (on=0, off=1)

                  CABLE TYPE SELECTION

         Cable Type                     JP4

   RG62A/U 93ohm coaxial     Pins 2 & 3, 5 & 6 Closed

  Unshielded twisted pair    Pins 1 & 2, 4 & 5 Closed

                          TOPOLOGY TYPE SELECTION

            Topology Type                             JP5

              Linear Bus                              Open

                 Star                                Closed

            Note: For Linear Bus, use 105 W terminator in lower RJ11
            connector of last station.

                        BASE I/O ADDRESS SELECTION

           Address                    SW1/9                 SW1/10

  »          2E0-2EFh                  Off                    On

             2D0-2DFh                  On                     On

             2F0-2FFh                  On                    Off

             300-30Fh                  Off                   Off

                            SHARED RAM ADDRESS

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

      C000-C3FFh      On       On        On       On       Off      Off

      C400-C7FFh      Off      On        On       On       Off      Off

      C800-CBFFh      On       Off       On       On       Off      Off

      CC00-CFFFh      Off      Off       On       On       Off      Off

  »   D000-D3FFh      On       On       Off       On       Off      Off

      D400-D7FFh      Off      On       Off       On       Off      Off

      D899-DBFFh      On       Off      Off       On       Off      Off

      DC00-DFFFh      Off      Off      Off       On       Off      Off

      E000-E0FFh      On       On        On      Off       Off      Off

                            INTERRUPT SELECTION

     IRQ        JP2/A       JP2/B        JP2/C       JP2/D       JP2/E

  »     2       Closed       Open        Open        Open         Open

        3        Open       Closed       Open        Open         Open

       10        Open        Open       Closed       Open         Open

       11        Open        Open        Open       Closed        Open

       12        Open        Open        Open        Open        Closed

                          BOOT ROM CONFIGURATION

                 Setting                                JP1

  »                Enabled                             Open

                  Disabled                            Closed

            CONNECTIONS

     Purpose          Position

  Diagnostic LED         JP3

                              DIAGNOSTIC LED

               Status                             Condition

                 On                       Network connection is good

                Off                      Network connection is broken

                Dim                             Heavy traffic

              Blinking                Temporarily unable to connect with
                                               some other nodes

  FACTORY CONFIGURED SETTINGS

     SW1/7           SW1/8

       On              On