
COMPEX, INC.

ANET-1A/ANET-1(REVISION K)

NIC Type      ARCnet
Transfer Rate 2.5Mbps
Data Bus      8-bit ISA
Topology      Linear bus

              Star
Wiring Type   Unshielded twisted pair
Boot ROM      Available

[Image]

                        BASE MEMORY ADDRESS SELECT

    Address        J2/A        J2/B        J2/C       J2/D        J2/E

      D0000h     Closed       Open        Open      Closed      Closed

       C0000h     Closed      Closed      Closed     Closed      Closed

       C4000h     Closed      Closed       Open      Closed      Closed

       CC000h     Closed       Open       Closed     Closed      Closed

       D4000h      Open       Closed      Closed     Closed      Closed

       D8000h      Open       Closed       Open      Closed      Closed

       DC000h      Open        Open       Closed     Closed      Closed

       E0000h      Open        Open        Open      Closed      Closed

                                 BOOT ROM

                 Setting                               J1/C

                 Disabled                             open

                   Enabled                            closed

                              CABLE TOPOLOGY

                Setting                                 J7

                   Star                              Closed

                 Linear bus                            Open

                                CABLE TYPE

             Type                       J5                    J6

      RG58A/U 50ohm coaxial    Pins 1 & 2 closed      Pins 1 & 2 closed

         Unshielded twisted     Pins 2 & 3 closed      Pins 2 & 3 closed
               pair

                    CONNECTIONS

         Purpose                  Location

  External LED connector             LJ1

                             INTERRUPT SELECT

     IRQ          J4/A        J4/B        J4/C        J4/D        J4/E

      IRQ2      Closed       Open        Open        Open        Open

       IRQ3       Open       Closed       Open        Open        Open

       IRQ4       Open        Open       Closed       Open        Open

       IRQ5       Open        Open        Open       Closed       Open

       IRQ7       Open        Open        Open        Open       Closed

                            I/O ADDRESS SELECT

       Address             J3/A              J3/B              J3/C

         2E0h            Closed             Open             Closed

          260h            Closed            Closed            Closed

          290h            Closed            Closed             Open

          2F0h            Closed             Open              Open

          300h             Open             Closed            Closed

          350h             Open             Closed             Open

          380h             Open              Open             Closed

          3E0h             Open              Open              Open

                               NODE ADDRESS

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

   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)

                           TIMEOUT CONFIGURATION

        Response Time                 J1/A                   J1/B

             74.7s                  open                   open

             283.4s                  open                  closed

             561.8s                 closed                  open

             1118.6s                closed                 closed

                              DIAGNOSTIC LED

     LED         Color           Status                 Condition

    LED1         Green             On            Data is being received

    LED1         Green             Off              Data is not being
                                                        received

    LED2          Red           Blinking          Network connection is
                                                         broken

    LED2          Red              On             Network connection is
                                                          good

