
DANPEX CORPORATION

AN-120 /AN-220, AN-120S/AN-120BT

NIC Type      ARCnet
Transfer Rate 2.5Mbps
Data Bus      8-bit ISA
Topology      Star (AN-120)

              Linear Bus (AN-220)
Wiring Type   Shielded/Unshielded twisted pair

              RG62A/U 93ohm coaxial
Boot ROM      Available

[Image]

                               NODE ADDRESS

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

   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)

                  BASE MEMORY ADDRESS & BOOT ROM ADDRESS

  Base Address    Boot ROM    SW1/1    SW1/2    SW1/3    SW1/4     SW1/5

       C0000 -     C2000 -     On        On       On       On       On
       C07FFh      C3FFFh

       C0800 -     C2000 -     Off       On       On       On       On
       C0FFFh      C3FFFh

       C1000 -     C2000 -     On       Off       On       On       On
       C17FFh      C3FFFh

       C1800 -     C2000 -     Off      Off       On       On       On
       C1FFFh      C3FFFh

       C4000 -     C6000 -     On        On      Off       On       On
       C47FFh      C7FFFh

       C4800 -     C6000 -     Off       On      Off       On       On
       C4FFFh      C7FFFh

       C5000 -     C6000 -     On       Off      Off       On       On
       C57FFh      C7FFFh

       C5800 -     C6000 -     Off      Off      Off       On       On
       C5FFFh      C7FFFh

       CC000 -     CE000 -     On        On       On      Off       On
       CC7FFh      CFFFFh

       CC800 -     CE000 -     Off       On       On      Off       On
       CCFFFh      CFFFFh

       CD000 -     CE000 -     On       Off       On      Off       On
       CD7FFh      CFFFFh

       CD800 -     CE000 -     Off      Off       On      Off       On
       CDFFFh      CFFFFh

      D0000 -     D2000 -     On        On      Off      Off       On
       D07FFh      D3FFFh

       D0800 -     D2000 -     Off       On      Off      Off       On
       D0FFFh      D3FFFh

       D1000 -     D2000 -     On       Off      Off      Off       On
       D17FFh      D3FFFh

       D1800 -     D2000 -     Off      Off      Off      Off       On
       D1FFFh      D3FFFh

       D4000 -     D6000 -     On        On       On       On       Off
       D47FFh      D7FFFh

       D4800 -     D6000 -     Off       On       On       On       Off
       D4FFFh      D7FFFh

       D5000 -     D6000 -     On       Off       On       On       Off
       D57FFh      D7FFFh

       D5800 -     D6000 -     Off      Off       On       On       Off
       D5FFFh      D7FFFh

       D8000 -     DA000 -     On        On      Off       On       Off
       D87FFh      DBFFFh

       D8800 -     DA000 -     Off       On      Off       On       Off
       D8FFFh      DBFFFh

       D9000 -     DA000 -     On       Off      Off       On       Off
       D97FFh      DBFFFh

       D9800 -     DA000 -     Off      Off      Off       On       Off
       D9FFFh      DBFFFh

       DC000 -     DE000 -     On        On       On      Off       Off
       DC7FFh      DFFFFh

       DC800 -     DE000 -     Off       On       On      Off       Off
       DCFFFh      DFFFFh

       DD000 -     DE000 -     On       Off       On      Off       Off
       DD7FFh      DFFFFh

       DD800 -     DE000 -     Off      Off       On      Off       Off
       DDFFFh      DFFFFh

       E0000 -     E2000 -     On        On      Off      Off       Off
       E07FFh      E2FFFh

       E0800 -     E2000 -     Off       On      Off      Off       Off
       E0FFFh      E2FFFh

       E1000 -     E2000 -     On       Off      Off      Off       Off
       E17FFh      E2FFFh

       E1800 -     E2000 -     Off      Off      Off      Off       Off
       E1FFFh      E2FFFh

                             I/O BASE ADDRESS

        Address               SW1/6            SW1/7           SW1/8

          260-26Fh             On               On               On

          290-29Fh             Off              On               On

         2E0-2EFh             On               Off              On

          2F0-2FFh             Off              Off              On

          300-30Fh             On               On              Off

          350-35Fh             Off              On              Off

          380-38Fh             On               Off             Off

          3E0-3EFh             Off              Off             Off

                                 BOOT ROM

                 Setting                               SW1/9

                  Disabled                             Off

                   Enabled                               On

                            ONBOARD TERMINATOR

                 Setting                              SW1/10

                  Disabled                             Off

                   Enabled                              On

  Note:If the card is the last in the line of network cards, the onboard
  terminator may be enabled instead of using a T-connector and an
  external terminator. This setting is valid only with the AN-220. If
  using an AN-120, SW1/10 must be off. (Star topologies do not require
  the use of terminators)

                   RESPONSE AND RECONFIGURATION TIMEOUTS

  Response Time    Idle Time      Reconfiguration       ET1        ET2
                                       Time

        78s         86s             840ms            Open       Open

        285s        316s            1680ms           Closed      Open

        563s        624s            1680ms            Open      Closed

        1130s       1237s           1680ms           Closed     Closed

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

                             INTERRUPT REQUEST

    IRQ         JP1A         JP1B        JP1C         JP1D        JP1E

       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

                                CABLE TYPE

                Type                        JP2                JP3

        RG62A/U 93ohm coaxial           Pins 2 & 3         Pins 2 & 3
                                          closed             closed

       Shielded/Unshielded twisted       Pins 1 & 2         Pins 1 & 2
                  pair                    closed             closed

                             DIAGNOSTIC LED(S)

       LED               Status                     Condition

       LED1                On             Card is receiving power and is
                                                operating properly

       LED1             Blinking           Data is being transmitted or
                                                     received

       LED1                Off            Card is not receiving power or
                                                   is defective

