
TIARA COMPUTER SYSTEMS, INC.

LanCard/A * AT FO

NIC Type      ARCnet
Transfer Rate 2.5Mbps
Data Bus      16-bit ISA
Topology      Star
Wiring Type   200s
Boot ROM      Available

[Image]

                               NODE ADDRESS

  Node   SW4/1    SW4/2   SW4/3   SW4/4    SW4/5   SW4/6    SW4/7   SW4/8

   0       -       -        -       -       -        -       -        -

   1      Off     Off      Off     Off     Off      Off     Off      On

   2      Off     Off      Off     Off     Off      Off      On      Off

   3      Off     Off      Off     Off     Off      Off      On      On

   4      Off     Off      Off     Off     Off      On      Off      Off

  251     On       On      On      On       On      Off      On      On

  252     On       On      On      On       On      On      Off      Off

  253     On       On      On      On       On      On      Off      On

  254     On       On      On      On       On      On       On      Off

  255     On       On      On      On       On      On       On      On

  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
       8 is the Least Significant Bit and switch 1 is the Most
       Significant Bit. The switches have the following decimal values:
       switch 8=1, 7=2, 6=4, 5=8, 4=16, 3=32, 2=64, 1=128. Turn on the
       switches and add the values of the on switches to obtain the
       correct node address. (On=1, Off=0)

                                            INTERRUPT REQUEST

   IRQ     JP1      JP2      JP3      JP4      JP5      JP6      JP7      JP8     JP9      JP10     JP11

     2    Open     Open     Open     Open    Open     Closed   Open     Open     Open     Open     Open

      3    Open     Open     Open     Open    Open     Open     Open     Open     Open     Open    Closed

      4    Open     Open     Open     Open    Open     Open     Open     Open     Open    Closed    Open

      5    Open     Open     Open     Open    Open     Open     Open     Open    Closed    Open     Open

      6    Open     Open     Open     Open    Open     Open     Open     Closed   Open     Open     Open

      7    Open     Open     Open     Open    Open     Open     Closed   Open     Open     Open     Open

      10   Open     Open     Open     Open    Closed   Open     Open     Open     Open     Open     Open

      11   Open     Open     Open    Closed   Open     Open     Open     Open     Open     Open     Open

      12   Open     Open    Closed    Open    Open     Open     Open     Open     Open     Open     Open

      14   Open    Closed    Open     Open    Open     Open     Open     Open     Open     Open     Open

      15  Closed    Open     Open     Open    Open     Open     Open     Open     Open     Open     Open

                         DIAGNOSTIC CONFIGURATION

                  Setting                               JP12

        Enhanced diagnostics disabled            Pins 1 & 2 Closed

          Enhanced diagnostics enabled            Pins 2 & 3 Closed

  Note:The enhanced diagnostics are compatable only with the dirver that
  was shipped with this card. When the diagnostics are enabled, features
  such as an ARCnet duplicate Node ID search, are activated.

                                 BOOT ROM

                 Setting                               SW1/1

                  Disabled                             Off

                    Enabled                              On

                     RIM BUFFER ADDRESS CONFIGURATION

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

   xC0OOh      Off      On       On      Off      Off      Off      Off

   xC4OOh      Off      On       On      Off      Off      Off       On

   xCCOOh      Off      On       On      Off      Off      On        On

   xD0OOh      Off      On       On      Off       On      Off      Off

   xD4OOh      Off      On       On      Off       On      Off       On

   xD8OOh      Off      On       On      Off       On      On       Off

   xDCOOh      Off      On       On      Off       On      On        On

  xE 000h      Off      On       On       On      Off      Off      Off

  Notes: Place one digit from the following table in front of the address
  given above to get the complete Address.

  SW3/switch 4 should be set to On for 128KB, or Off for 16KB.

                 RIM BUFFER EXTENDED ADDRESS CONFIGURATION

   Segment      SW3/1   SW3/2    SW3/3    SW3/5   SW3/6    SW3/7   SW3/8

     0xxxxh     On      Off     Off      Off      Off     Off      Off

      1xxxxh     On      Off     Off      Off      Off     Off       On

      2xxxxh     On      Off     Off      Off      Off      On      Off

      3xxxxh     On      Off     Off      Off      Off      On       On

      4xxxxh     On      Off     Off      Off      On      Off      Off

      5xxxxh     On      Off     Off      Off      On      Off       On

      6xxxxh     On      Off     Off      Off      On       On      Off

      7xxxxh     On      Off     Off      Off      On       On       On

      8xxxxh     On      Off     Off       On      Off     Off      Off

      9xxxxh     On      Off     Off       On      Off     Off       On

      Axxxxh     On      Off     Off       On      Off      On      Off

      Bxxxxh     On      Off     Off       On      Off      On       On

      Cxxxxh     On      Off     Off       On      On      Off      Off

      Dxxxxh     On      Off     Off       On      On      Off       On

      Exxxxh     On      Off     Off       On      On       On      Off

      Fxxxxh     On      Off     Off       On      On       On       On

  Note: Place the digit found in this table in front of the address given
  on the previous table to get the complete RIM buffer address. A setting
  other than zero in this table will place the buffer into extended
  memory at the aforementioned address. For example, a setting of 2 will
  place the buffer into the 2nd megabyte of extended memory, a setting of
  C will place the buffer into the 12th megabyte of extended memory.
  Starting from the base address. Make sure that the next 16 to 128KB of
  memory (see above notes) are not used.

  Important: The software drivers supplied with this card do not support
  extended memory.

                      EXTENDED TIMEOUT CONFIGURATION

    Distance        Response      Reconfiguration      SW2/1      SW2/2
                      Time

     4.8 miles      74.7s            840ms             On         On

         21.0        283.4s          1680ms             On        Off
        miles

         42.5        561.8s          1680ms            Off         On
        miles

         85.6       1118.6s          1680ms            Off        Off
        miles

  Note: The distance given is the maximum distance between the two
  furthest nodes on the network.

                             I/O BASE ADDRESS

   Address      SW2/3     SW2/4     SW2/5     SW2/6     SW2/7      SW2/8

      2E0h      On        Off        On        On        On        Off

       260h      On        Off       Off        On        On        Off

       290h      On        Off        On       Off       Off        On

       2B0h      On        Off        On       Off        On        On

       300h      On        On        Off       Off       Off        Off

       350h      On        On        Off        On       Off        On

       380h      On        On         On       Off       Off        Off

       3E0h      On        On         On        On        On        Off

                         DIAGNOSTIC LED(S)

    LED        Color      Status               Condition

     L1         Red         On          Data is being received

     L1         Red        Off        Data is not being received

     L1         Red      Blinking        Card is reconfiguring

     L2        Green        On         Data is being transmitted

     L2        Green       Off       Data is not being transmitted

     L2        Green     Blinking        Card is reconfiguring

