
DIGI INTERNATIONAL, INC.

COM/4I, COM/8I

Card Type              Serial
Processor              80C186
Processor Speed        10MHz
Chipset                Unidentified
Maximum Onboard Memory 256KB RAM
I/O Options            Serial ports (4 for COM/4i, 8 for COM/8i)
Data Bus               8/16 bit ISA
Card Size              Full height, full length

[Image]

                                CONNECTIONS

          Function             Label           Function           Label

  Header to daughterboard       H1A      Header to main board      H2B
  H1B                                    H2A (on back of card)

  Header to main board H1A      H1B      RS-232, RS-422, or         P1
  (on back of card)                      RS-485 serial ports
                                         via DB-78 connector

  Header to daughterboard       H2A
  H2B

            Note:Standard serial ports are provided on an external
            expansion box.

            The types of serial ports provided are configured at the
            factory and are not user-configurable.

                        USER CONFIGURABLE SETTINGS

                   Setting                      Label        Position

     Factory configured - do not alter          J17         Pins 2 & 3
                                                              closed

                        BASE I/O ADDRESS SELECTION

     Setting              J2                 J3                 J4

       100h            Pins 2 & 3        Pins 2 & 3         Pins 1 & 2
                        closed             closed             closed

       110h            Pins 2 & 3        Pins 1 & 2         Pins 2 & 3
                        closed             closed             closed

       120h            Pins 2 & 3        Pins 1 & 2         Pins 1 & 2
                        closed             closed             closed

       200h            Pins 1 & 2        Pins 2 & 3         Pins 2 & 3
                        closed             closed             closed

       220h            Pins 1 & 2        Pins 2 & 3         Pins 1 & 2
                        closed             closed             closed

       300h            Pins 1 & 2        Pins 1 & 2         Pins 2 & 3
                        closed             closed             closed

       320h            Pins 1 & 2        Pins 1 & 2         Pins 1 & 2
                        closed             closed             closed

                            INTERRUPT SELECTION

     Setting          J5         J6          J7         J8          J9

         2/9         Open       Open        Open       Open        Open

          3          Open       Open        Open       Open        Open

          4          Open       Open        Open       Open        Open

          5          Open       Open        Open       Open        Open

          6          Open       Open        Open       Open        Open

          7          Open       Open        Open       Open       Closed

          10         Open       Open        Open      Closed       Open

          11         Open       Open       Closed      Open        Open

          12         Open      Closed       Open       Open        Open

          15        Closed      Open        Open       Open        Open

      Disabled      Open       Open        Open       Open        Open

                        INTERRUPT SELECTION (CON'T)

     Setting          J10        J11        J12         J13        J14

         2/9         Open       Open        Open       Open       Closed

          3          Open       Open        Open      Closed       Open

          4          Open       Open       Closed      Open        Open

          5          Open      Closed       Open       Open        Open

          6         Closed      Open        Open       Open        Open

          7          Open       Open        Open       Open        Open

          10         Open       Open        Open       Open        Open

          11         Open       Open        Open       Open        Open

          12         Open       Open        Open       Open        Open

          15         Open       Open        Open       Open        Open

      Disabled      Open       Open        Open       Open        Open

               SHARED MEMORY ADDRESS SELECTION

       Setting               J15                  J16

       0C0000h         Pins 2 & 3 closed   Pins 2 & 3 closed

       0C8000h         Pins 2 & 3 closed   Pins 1 & 2 closed

       0D0000h         Pins 1 & 2 closed   Pins 2 & 3 closed

       0D8000h         Pins 1 & 2 closed   Pins 1 & 2 closed

                           EPROM SIZE SELECTION

         Setting                    JP1                      JP2

             8KB            Pins 1 & 2 closed        Pins 1 & 2 closed

             16KB            Pins 1 & 2 closed        Pins 1 & 2 closed

             32KB            Pins 1 & 2 closed        Pins 2 & 3 closed

             64KB            Pins 2 & 3 closed        Pins 2 & 3 closed

