
EDIMAX COMPUTER COMPANY

AL-2350

NIC Type      Arcnet
Transfer Rate 2.5Mbps
Data Bus      8-bit ISA
Topology      Linear bus
Wiring Type   RG-62A/U 93ohm coaxial
Boot ROM      Available

[Image]

                          NODE ADDRESS SELECTION

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

    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

    5       Off      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: A total of 255 node address settings are available. The
       switches are a binary representation of the decimal node
       addresses. Switch SW1/1 is the Least Significant Bit and switch
       SW1/8 is the Most Significant Bit. The switches have the following
       decimal values: jumper SW1/1=1, SW1/2=2, SW1/=4, SW1/4=8,
       SW1/5=16, SW1/6=32, SW1/7=64, SW1/8=128.Open the switches and add
       the values of the off switches to obtain the correct node address.
       (On=0, Off=1)

                                 TOPOLOGY

        Topology              W5/1         W5/2        W5/3        W5/4

         Linear bus         Closed        Open        Open        Open

                        BASE I/O ADDRESS SELECTION

   Address      SW2/1     SW2/2     SW2/3     SW2/4     SW2/5      SW2/6

      2E0h      Off       On        Off       Off       Off        On

       2F0h      Off       On        Off       Off       Off        Off

       300h      Off       Off       On         On        On        On

       200h      Off       On        On         On        On        On

       210h      Off       On        On         On        On        Off

       220h      Off       On        On         On       Off        On

       230h      Off       On        On         On       Off        Off

       240h      Off       On        On        Off        On        On

       3B0h      Off       Off       Off        On       Off        Off

       3C0h      Off       Off       Off       Off        On        On

       3D0h      Off       Off       Off       Off        On        Off

       3E0h      Off       Off       Off       Off       Off        On

       3F0h      Off       Off       Off       Off       Off        Off

  Note: Addresses from 0h to 3F0h are possible, but those below 200h are
  not normally used. The sum of SW1/1 and SW1/2 represent the first
  digit. The sum of SW1/3-6 represent the second digit. The last digit is
  always zero. SW1/1=200h, SW1/2=100h, SW1/3=80h, SW1/4=40h, SW1/5=20h,
  SW/6=10h.

                            INTERRUPT SELECTION

                   IRQ                                  W3

         Com 9026 INTR set to IRQ 2              Pins 1-2 closed

          Com 9026 INTR set to IRQ 3              Pins 2-5 closed

          Com 9026 INTR set to IRQ 4              Pins 8-9 closed

          Com 9026 INTR set to IRQ 5              Pins 7-8 closed

          Com 9026 INTR set to IRQ 7             Pins 8-11 closed

          8253 Timeout 1 set to IRQ2              Pins 3-6 closed

          8253 Timeout 0 set to IRQ3              Pins 5-6 closed

          8253 Timeout 0 set to IRQ4              Pins 6-9 closed

          8253 Timeout 0 set to IRQ5             Pins 7-10 closed

          8253 Timeout 0 set to IRQ7             Pins 10-11 closed

          8253 Timeout 0 set to IRQ2              Pins 1-4 closed

          8253 Timeout 0 set to IRQ3              Pins 4-5 closed

          8253 Timeout 0 set to IRQ4             Pins 9-12 closed

          8253 Timeout 0 set to IRQ5              Pins 4-7 closed

          8253 Timeout 0 set to IRQ7             Pins 11-12 closed

                         RESPONSE/RECONFIGURATION

             Time                       W1                    W2

       74.7 m Sec/840 mSec            Open                  Open

       383.4 m Sec/1680 mSec          Closed                 Open

       561.8 m Sec/1680 mSec           Open                 Closed

         11118.6 m Sec/1680           Closed                Closed
               mSec

                       BASE MEMORY ADDRESS SELECTION

      Address          SW2/7        SW2/8         SW2/9         SW2/10

        D000h          Off          Off            On            On

         0000h          On            On            On            On

         1000h          On            On            On           Off

         2000h          On            On           Off            On

         3000h          On            On           Off           Off

         4000h          On           Off            On            On

         5000h          On           Off            On           Off

         B000h          Off           On           Off           Off

         C000h          Off          Off            On            On

         E000h          Off          Off           Off            On

         F000h          Off          Off           Off           Off

                             DIAGNOSTIC LED(S)

               Status                              Condition

                 On                       Network connection is good

                 Off                     Network connection is broken

              Blinking                Data is being transmitted/received

