NIWOT NETWORKS, INC.

AT/SD

Card Type                    Serial X.25
Chip Set                     Unidentified
Maximum Onboard Memory       32KB DRAM
I/O Options                  Serial port
Data Bus                     16-bit ISA
Error Correction/Compression LAPB, LAPD

[Image]

                                CONNECTIONS

         Function            Label            Function            Label

  V.35, RS-232, RS-422,       J1       Daughterboard header         J3
  or RS-449 port

  Daughterboard header        J2

                        USER CONFIGURABLE SETTINGS

                    Setting                        Label       Position

  »   External clock source                        SW1/6          On

      Internal 1.25MHz clock source                SW1/6         Off

      Node address 1                               SW1/8         Off

      Node address 3                               SW1/8          On

  »   Factory configured - do not alter            SW1/5         Off

                                WAIT STATE

         Setting                   SW1/4                    SW1/7

               0                     On                      On

  »            1                     On                      Off

               2                    Off                      On

               3                    Off                      Off

                                DMA CHANNEL

         Setting                   JP1                      JP3

              0            Pins 13 & 14, 15 & 16            Open
                                  closed

              1                    Open               Pins 5 & 6, 7 & 8
                                                           closed

              3                    Open               Pins 1 & 2, 3 & 4
                                                           closed

              5            Pins 9 & 10, 11 & 12             Open
                                  closed

  »           6              Pins 5 & 6, 7 & 8              Open
                                  closed

              7              Pins 1 & 2, 3 & 4              Open
                                  closed

                             BASE I/O ADDRESS

       Setting             SW1/1             SW1/2             SW1/3

  »        280h              On                On               On

           290h              On                On               Off

           2E0h              On               Off               On

           2F0h              On               Off               Off

           300h             Off                On               On

           350h             Off                On               Off

           380h             Off               Off               On

                                 INTERRUPT

  Setting    JP2/A      JP2/B      JP2/C     JP2/D      JP2/E      JP4

    2/9       Open       Open      Open       Open      Open      Closed

    10        Open       Open      Open       Open     Closed      Open

    11        Open       Open      Open      Closed     Open       Open

    12        Open       Open     Closed      Open      Open       Open

    14       Closed      Open      Open       Open      Open       Open

    15        Open      Closed     Open       Open      Open       Open