COMPEX, INC.

ANET-1, ANET-12

NIC Type      ARCnet
Transfer Rate 2.5Mbps
Data Bus      8-bit ISA
Topology      Star (ANET-1)

              Linear Bus (ANET-12)
Wiring Type   RG-62A/U 93ohm coaxial
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      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 AND RECONFIGURATION TIMEOUTS

  Response Time       Idle       Reconfiguration       JP1         JP2
                     Time             Time

  »     74.7µs        86µs           840ms            Open        Open

       283.4µs       316µs           1680ms           Open       Closed

        561.8µs      624µs           1680ms          Closed       Open

       1118.6µs     1237µs           1680ms          Closed      Closed

  Note:All NICs on the network segment must have this option set the
  same.

                              MODE SELECTION

                 Mode                                  JP3

  »                Normal                 As shown in diagram on previous
                                                       page

                   Special                As shown on diagram on previous
                                                       page

       Note:In normal mode, any 32KB memory segment in the system may be
       selected. For an AT, however, with memory, display cards, and a
       hard drive controller, only 16KB of free memory space is available
       between CC000h and CFFFFh. In Special Mode the memory space
       occupied by the adapter is reduced by half to 16KB and the memory
       address is automatically set to CC000h. This overrides the base
       memory setting on JP15 and JP16.

                             I/O BASE ADDRESS

   Address     JP9       JP8       JP7        JP6       JP5        JP4

      260h     Open    Closed     Closed     Open       Open      Closed

      280h     Open    Closed      Open     Closed     Closed     Closed

  »   2E0h     Open    Closed      Open      Open       Open      Closed

      2F0h     Open    Closed      Open      Open       Open       Open

      300h     Open     Open      Closed    Closed     Closed     Closed

      360h     Open     Open      Closed     Open       Open      Closed

  Note:Jumpers count from right to left in the diagram.

                             INTERRUPT REQUEST

     IRQ          JP10        JP11        JP12        JP13        JP14

  »    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

                             BOOT ROM ADDRESS

     Address         JP15        JP16         JP17       JP18      JP19

       C0000h       Closed      Closed       Closed      Open      Open

       C8000h        Open       Closed       Closed      Open      Open

       CC000h        Open        Open        Closed      Open      Open

  »    D0000h       Closed       Open        Closed      Open      Open

  Note:Jumpers count from the bottom up in the diagram.

                         DIAGNOSTIC LED(S)

    LED        Color      Status               Condition

    LED1        Red         On         Data is being transmitted

    LED1        Red        Off       Data is not being transmitted

    LED2       Green        On          Data is being received

    LED2       Green       Off        Data is not being received