MULTI-TECH SYSTEMS, INC.

AN301TP16

NIC Type      ARCnet
Transfer Rate 2.5Mbps
Data Bus      16-bit ISA
Topology      Star

              Linear bus
Wiring Type   Unshielded twisted pair
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)

                                 BOOT ROM

                 Setting                                J1

  »               Disabled                             Open

                   Enabled                            Closed

                             INTERRUPT REQUEST

    IRQ        JP4A      JP4B      JP4C       JP4D      JP4E       JP4F

  »   2/9      Open      Open      Open       Open      Open      Closed

       3       Open      Open      Open       Open     Closed      Open

       4       Open      Open      Open      Closed     Open       Open

       5       Open      Open     Closed      Open      Open       Open

       6       Open     Closed     Open       Open      Open       Open

       7      Closed     Open      Open       Open      Open       Open

                  BASE MEMORY ADDRESS & BOOT ROM ADDRESS

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

      C0000h      C2000h      Off      Off       Off      Off       Off

      C4000h      C6000h      On       Off       Off      Off       Off

      CC000h      CE000h      Off       On       Off      Off       Off

  »   D0000h      D2000h      On        On       Off      Off       Off

      D4000h      D6000h      Off      Off       On       Off       Off

      D8000h      DA000h      On       Off       On       Off       Off

      DC000h      DE000h      Off       On       On       Off       Off

      E0000h      E2000h      On        On       On       Off       Off

                   I/O BASE ADDRESS

   Address        SW1/6         SW1/7        SW1/8

  260 - 26Fh       On            On            On

  290 - 29Fh       On            On           Off

  2E0 - 2EFh       On            Off           On

  2F0 - 2FFh       On            Off          Off

  300 - 30Fh       Off           On            On

  350 - 35Fh       Off           On           Off

  380 - 38Fh       Off           Off           On

  3E0 - 3EFh       Off           Off          Off

                           DIAGNOSTIC LED(S)

    LED         Color       Status                Condition

    LED1        Green         On          Data is being transmitted

    LED1        Green        Off        Data is not being transmitted

    LED2         Red          On       Card is active on host data bus

    LED2         Red         Off              No card activity