
COMPEX, INC.

ANET-1A

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

              Linear Bus
Wiring Type   RG-62A/U 93ohm coaxial

              Unshielded twisted pair
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      Off     Off      Off     Off     Off      Off     Off      On

   2      Off     Off      Off     Off     Off      Off      On      Off

   3      Off     Off      Off     Off     Off      Off      On      On

   4      Off     Off      Off     Off     Off      On      Off      Off

  251     On       On      On      On       On      Off      On      On

  252     On       On      On      On       On      On      Off      Off

  253     On       On      On      On       On      On      Off      On

  254     On       On      On      On       On      On       On      Off

  255     On       On      On      On       On      On       On      On

  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 on the
       switches and add the values of the on switches to obtain the
       correct node address. (On=1, off=0)

                             INTERRUPT REQUEST

     IRQ         JP1A        JP1B         JP1C        JP1D        JP1E

      2/9      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             JP2A              JP2B              JP2C

          260h            Closed            Closed            Closed

          290h            Closed            Closed             Open

         2E0h            Closed             Open             Closed

          2F0h            Closed             Open              Open

          300h             Open             Closed            Closed

          350h             Open             Closed             Open

          380h             Open              Open             Closed

          3E0h             Open              Open              Open

                  BASE MEMORY ADDRESS & BOOT ROM ADDRESS

     Base       Boot ROM     JP3A     JP3B      JP3C      JP3D     JP3E
   Address      Address

      C0000h     C2000h     Closed    Closed   Closed    Closed   Closed

      C4000h     C6000h     Closed    Closed    Open     Closed   Closed

      CC000h     CE000h     Closed    Open     Closed    Closed   Closed

     D0000h     D2000h     Closed    Open      Open     Closed   Closed

      D4000h     D6000h      Open     Closed   Closed    Closed   Closed

      D8000h     DA000h      Open     Closed    Open     Closed   Closed

      DC000h     DE000h      Open     Open     Closed    Closed   Closed

      E0000h     E2000h      Open     Open      Open     Closed   Closed

                                WAIT STATE

                Setting                                 JP4

            System wait states                        Open

              Zero wait states                        Closed

  Note:If 0 wait states is selected, I/O CHRDY must be disabled (JP5
  open).

                                 I/O CHRDY

                 Setting                                JP5

                 Disabled                             Open

                   Enabled                            Closed

  Note:If a boot ROM is installed, I/O CHRDY must be enabled (JP5
  closed).

  If I/O CHRDY is enabled (JP5 closed), System wait states must be
  selected (JP4 open)

                                 BOOT ROM

                 Setting                                JP6

                 Disabled                             Open

                   Enabled                            Closed

                                CABLE TYPE

             Type                      JP7                    JP8

      RG-58A/U 50ohm coaxial   Pins 1 & 2 Closed      Pins 1 & 2 Closed

         Unshielded twisted     PIns 2 & 3 Closed      PIns 2 & 3 Closed
               pair

                                 TOPOLOGY

                Topology                               JP9

                   Star                              Closed

                 Linear Bus                            Open

                             DIAGNOSTIC LED(S)

    LED         Color        Status                 Condition

    LED1         Red           On           Network connection is good

    LED1         Red        Blinking      Network connection is broken or
                                             no activity is detected

    LED2        Green          On             Data is being received

    LED2        Green         Off           Data is not being received

    LED2        Green       Blinking        System power has just been
                                                     applied

