DECISION COMPUTER INTERNATIONAL CO., LTD.
=========================================

   PCCOM 8-PORT EXTERNAL RS-232 RISC, PCCOM 8-PORT EXTERNAL
   RS-422 RISC

   Card Type         Serial                                       
   Chipset           Cirrus Logic CL-CD1400                       
   I/O Options       Serial ports (8), interrupt daisy chain      
   Data Bus          16-bit ISA                                   
   Card Size         Full height, half length                     

<gopher://bitreich.org/I/th99/i/C-D/53186-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Function        | Label  |     Function      | Label |
   |-----------------------+--------+-------------------+-------|
   | RS-232 or RS-422      |  IO1   | Interrupt         |  JP3  |
   | serial ports via      |        | daisy-chain in    |       |
   | unidentified          |        |                   |       |
   | connector             |        |                   |       |
   |-----------------------+--------+-------------------+-------|
   | Interrupt daisy-chain |  JP2   |                   |       |
   | out                   |        |                   |       |
   |------------------------------------------------------------|
   |      Note:Standard DB-25 serial ports are provided on an   |
   |      included external expansion box.                      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Setting                | Label  |  Position  |
   |--------------------------------------+--------+------------|
   |>>   | Board is interrupt master      |  JP1   |   Closed   |
   |-----+--------------------------------+--------+------------|
   |     | Board is interrupt slave       |  JP1   |    Open    |
   |-----+--------------------------------+--------+------------|
   |>>   | Interrupt enabled              |  JP4   |   Closed   |
   |-----+--------------------------------+--------+------------|
   |     | Interrupt disabled             |  JP4   |    Open    |
   |------------------------------------------------------------|
   |      Note:When interrupt sharing is used, all boards       |
   |      should be set to interrupt enabled. When              |
   |      daisy-chaining is used, only the first board in the   |
   |      chain should be set to interrupt enabled.             |
   +------------------------------------------------------------+

   +-------------------------------------------------------------+
   |                     INTERRUPT SELECTION                     |
   |-------------------------------------------------------------|
   |Setting|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|SW1/6|SW1/7|SW1/8|SW1/9|
   |-------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
   |   3   | On  | Off | Off | Off | Off | Off | Off | Off | Off |
   |-------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
   |   4   | Off | On  | Off | Off | Off | Off | Off | Off | Off |
   |-------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
   |   5   | Off | Off | On  | Off | Off | Off | Off | Off | Off |
   |-------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
   |   6   | Off | Off | Off | On  | Off | Off | Off | Off | Off |
   |-------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
   |   7   | Off | Off | Off | Off | On  | Off | Off | Off | Off |
   |-------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
   |  10   | Off | Off | Off | Off | Off | On  | Off | Off | Off |
   |-------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
   |  11   | Off | Off | Off | Off | Off | Off | On  | Off | Off |
   |-------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
   |  12   | Off | Off | Off | Off | Off | Off | Off | On  | Off |
   |-------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
   |  15   | Off | Off | Off | Off | Off | Off | Off | Off | On  |
   +-------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SHARED MEMORY ADDRESS SELECTION               |
   |------------------------------------------------------------|
   | Setting | SW1/1  | SW1/2  | SW1/3  | SW1/4 | SW1/5 | SW1/6 |
   |---------+--------+--------+--------+-------+-------+-------|
   | 80000h  |   On   |   On   |   On   |  On   |  On   |  On   |
   |---------+--------+--------+--------+-------+-------+-------|
   | 82000h  |  Off   |   On   |   On   |  On   |  On   |  On   |
   |---------+--------+--------+--------+-------+-------+-------|
   | 84000h  |   On   |  Off   |   On   |  On   |  On   |  On   |
   |---------+--------+--------+--------+-------+-------+-------|
   | 86000h  |  Off   |  Off   |   On   |  On   |  On   |  On   |
   |---------+--------+--------+--------+-------+-------+-------|
   | 88000h  |   On   |   On   |  Off   |  On   |  On   |  On   |
   |---------+--------+--------+--------+-------+-------+-------|
   | F6000h  |  Off   |  Off   |   On   |  Off  |  Off  |  Off  |
   |---------+--------+--------+--------+-------+-------+-------|
   | F8000h  |   On   |   On   |  Off   |  Off  |  Off  |  Off  |
   |---------+--------+--------+--------+-------+-------+-------|
   | FA000h  |  Off   |   On   |  Off   |  Off  |  Off  |  Off  |
   |---------+--------+--------+--------+-------+-------+-------|
   | FC000h  |   On   |  Off   |  Off   |  Off  |  Off  |  Off  |
   |---------+--------+--------+--------+-------+-------+-------|
   | FE000h  |  Off   |  Off   |  Off   |  Off  |  Off  |  Off  |
   |------------------------------------------------------------|
   |      Note: A total of 64 base address settings are         |
   |      available. The switches are a binary representation   |
   |      of the decimal memory addresses. SW1/6 is the Most    |
   |      Significant Bit and switch SW1/1 is the Least         |
   |      Significant Bit. The switches have the following      |
   |      decimal values: SW1/6=262,144, SW1/5=131,072,         |
   |      SW1/4=65,536, SW1/3=32,768, SW1/2=16,384,             |
   |      SW1/1=8,192. Turn off the switches and add the values |
   |      of the switches that are off to 524,288 to obtain the |
   |      correct memory address. (Off=1, On=0)                 |
   +------------------------------------------------------------+