DIGI INTERNATIONAL, INC.
========================

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

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

<gopher://bitreich.org/I/th99/i/C-D/53318-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |          Function          | Label |   Function    | Label |
   |----------------------------+-------+---------------+-------|
   | RS-232 asynchronous serial |  CN1  | Header to H2B |  H2A  |
   | 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 &  |
   |   | receive/transmit clock signal A    |       | 2 closed  |
   |---+------------------------------------+-------+-----------|
   |   | Pin 10 of synchronous port is DCD  |  J1   | Pins 2 &  |
   |   | signal                             |       | 3 closed  |
   |---+------------------------------------+-------+-----------|
   |   | Pin 1 of synchronous port is       |  J2   | Pins 1 &  |
   |   | transmit/receive clock signal      |       | 2 closed  |
   |---+------------------------------------+-------+-----------|
   |   | Pin 1 of synchronous port is sync  |  J2   | Pins 2 &  |
   |   | B signal                           |       | 3 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  |
   +------------------------------------------------------------+