DIGI INTERNATIONAL, INC.

MC/4I+, MC/8I+ (RS-232 VERSION)

Card Type              Serial
Processor              80C186
Processor Speed        Unidentified
Chipset                Unidentified
Maximum Onboard Memory 256KB dual-ported RAM
I/O Options            Serial ports (5 for MC/4i+, 9 for MC/8i+)
Data Bus               MCA
Card Size              Full height, full length

[Image]

                                CONNECTIONS

          Function             Label           Function           Label

  RS-232 asynchronous           CN1      Header to H2B             H2A
  serial ports via DB-78
  connector

  RS-232 synchronous serial     CN2      Header to H2A             H2B
  port via RJ-45 connector

  Header to H1B                 H1A      Header to H3B             H3A

  Header to H1A                 H1B      Header to H3A             H3B

            Note:Standard serial ports are provided on an included
            adapter cable.

                        USER CONFIGURABLE SETTINGS

                   Setting                       Label        Position

      Pin 10 of synchronous port is                J1        Pins 1 & 2
      receive/transmit clock signal A                          closed

      Pin 10 of synchronous port is DCD            J1        Pins 2 & 3
      signal                                                   closed

      Pin 1 of synchronous port is                 J2        Pins 1 & 2
      transmit/receive clock signal                            closed

      Pin 1 of synchronous port is sync B          J2        Pins 2 & 3
      signal                                                   closed

  »   Shared memory window is 32KB                JP1        Pins 2 & 3
                                                               closed

      Shared memory window is 128KB               JP1        Pins 1 & 2
                                                               closed

                     EPROM SIZE SELECTION

       Setting                J5                   J6

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

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

        64KB           Pins 1 & 2 closed   Pins 2 & 3 closed

        128KB          Pins 2 & 3 closed   Pins 2 & 3 closed

             SYNCHRONOUS PORT PIN 2 CONFIGURATION

       Setting                J3                   J4

     DSR signal        Pins 1 & 2 closed   Pins 1 & 2 closed

    Sync A signal      Pins 2 & 3 closed   Pins 2 & 3 closed