
DTK COMPUTER, INC.

ATN-001S & ATN-001B

NIC Type      Arcrnet
Transfer Rate 2.5Mbps
Data Bus      16-bit ISA
Topology      Linear Bus (ATN-001B)

              Star (ATN-001S)
Wiring Type   RG-62A/U 93ohm coaxial

              AUI transceiver via DB-15 port
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)

                                 BOOT ROM

                 Setting                                JP2

                 Disabled                             Open

                   Enabled                            Closed

                             BASE MEMORY ADDRESS

   Base Address       Boot ROM      JP1D     JP1E     JP1F    JP1G     JP1H

      C0000-C07FFh  C2000-C3FFFh   Closed   Closed   Closed   Closed   Closed

      C0800-C0FFFh  C2000-C3FFFh   Closed   Closed   Closed   Closed   Open

      C1000-C17FFh  C2000-C3FFFh   Closed   Closed   Closed   Open     Closed

      C1800-C1FFFh  C2000-C3FFFh   Closed   Closed   Closed   Open     Open

      C4000-C47FFh  C6000-C7FFFh   Closed   Closed    Open    Closed   Closed

      C4800-C4FFFh  C6000-C7FFFh   Closed   Closed    Open    Closed   Open

      C5000-C57FFh  C6000-C7FFFh   Closed   Closed    Open    Open     Closed

      C5800-C5FFFh  C6000-C7FFFh   Closed   Closed    Open    Open     Open

      CC000-CC7FFh  CE000-CFFFFh   Closed    Open    Closed   Closed   Closed

      CC800-CCFFFh  CE000-CFFFFh   Closed    Open    Closed   Closed   Open

      CD000-CD7FFh  CE000-CFFFFh   Closed    Open    Closed   Open     Closed

      CD800-CDFFFh  CE000-CFFFFh   Closed    Open    Closed   Open     Open

     D0000-D07FFh  D2000-D3FFFh   Closed    Open     Open    Closed   Closed

      D0800-D0FFFh  D2000-D3FFFh   Closed    Open     Open    Closed   Open

      D1000-D17FFh  D2000-D3FFFh   Closed    Open     Open    Open     Closed

      D1800-D1FFFh  D2000-D3FFFh   Closed    Open     Open    Open     Open

      D4000-D47FFh  D6000-D7FFFh    Open    Closed   Closed   Closed   Closed

      D4800-D4FFFh  D6000-D7FFFh    Open    Closed   Closed   Closed   Open

      D5000-D57FFh  D6000-D7FFFh    Open    Closed   Closed   Open     Closed

      D5800 D5FFFh  D6000-D7FFFh    Open    Closed   Closed   Open     Open

      D8000-D87FFh  DA000-DBFFFh    Open    Closed    Open    Closed   Closed

      D8800-D8FFFh  DA000-DBFFFh    Open    Closed    Open    Closed   Open

      D9000-D97FFh  DA000-DBFFFh    Open    Closed    Open    Open     Closed

      D9800-D9FFFh  DA000-DBFFFh    Open    Closed    Open    Open     Open

      DC000-DC7FFh  DE000-DFFFFh    Open     Open    Closed   Closed   Closed

      DC800-DCFFFh  DE000-DFFFFh    Open     Open    Closed   Closed   Open

      DD000-DD7FFh  DE000-DFFFFh    Open     Open    Closed   Open     Closed

      DD800-DDFFFh  DE000-DFFFFh    Open     Open    Closed   Open     Open

      E0000-E07FFh  E2000-E3FFFh    Open     Open     Open    Closed   Closed

      E0800-E0FFFh  E2000-E3FFFh    Open     Open     Open    Closed   Open

      E1000-E17FFh  E2000-E3FFFh    Open     Open     Open    Open     Closed

      E1800-E1FFFh  E2000-E3FFFh    Open     Open     Open    Open     Open

                             I/O BASE ADDRESS

          I/O                 JP1A            JP1B              JP1C

          260-26Fh           Closed          Closed            Closed

          290-29Fh           Closed          Closed             Open

         2E0-2EFh           Closed           Open             Closed

          300-30Fh            Open           Closed            Closed

          350-35Fh            Open           Closed             Open

          380-38Fh            Open            Open             Closed

          3E0-3EFh            Open            Open              Open

                             INTERRUPT REQUEST

     IRQ         JP5A        JP5B         JP5C        JP5D        JP5E

      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

                                WAIT STATE

               Setting                       JP3                JP4

            Zero wait states                Open             Closed

         Software programmable wait         Closed             Open
                  states

        Same as I/O Bus wait state           Open              Open

                               DECODING MODE

               Mode                  JP6A-JP6E & JP6G          JP6F

     Mode 1 (latched addresses      Pins 1 & 2 Closed      Pins 2 & 3
      are used)                                               Closed

      Mode 2 (unlatched addresses    Pins 2 & 3 Closed      Pins 2 & 3
      are used)                                               Closed

  Note: Do not change jumpers unless you have compatibility problems.

                             DIAGNOSTIC LED(S)

      LED            Color            Status              Condition

     LED1             Red            Blinking           Netwok cabling
                                                           failure

     LED2           Yellow              Off          or hardware failure

     LED1             Red               On                Data being
                                                         transmitted

     LED2           Yellow           Blinking            or received

