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       # SDL COMMUNICATIONS, INC.
       
          RISCOM/8RJ (REV. C)
       
          Card Type         Serial                                       
          Processor         Cirrus Logic CL-CD180                        
          Processor Speed   10MHz                                        
          I/O Options       Serial ports (8)                             
          Data Bus          16-bit ISA                                   
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |        Function        | Label |     Function      | Label |
          |------------------------+-------+-------------------+-------|
          | RS-422/485 serial port |  CN1  | RS-422/485 serial |  CN5  |
          | 1                      |       | port 5            |       |
          |------------------------+-------+-------------------+-------|
          | RS-422/485 serial port |  CN2  | RS-422/485 serial |  CN6  |
          | 2                      |       | port 6            |       |
          |------------------------+-------+-------------------+-------|
          | RS-422/485 serial port |  CN3  | RS-422/485 serial |  CN7  |
          | 3                      |       | port 7            |       |
          |------------------------+-------+-------------------+-------|
          | RS-422/485 serial port |  CN4  | RS-422/485 serial |  CN8  |
          | 4                      |       | port 8            |       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    WAIT STATE SELECTION                    |
          |------------------------------------------------------------|
          |       Setting        |       S1/7       |       S1/8       |
          |----------------------+------------------+------------------|
          | »  |        0        |        On        |        On        |
          |----+-----------------+------------------+------------------|
          |    |        1        |       Off        |        On        |
          |----+-----------------+------------------+------------------|
          |    |        2        |        On        |       Off        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    INTERRUPT SELECTION                     |
          |------------------------------------------------------------|
          |   Setting    |  J10/A  | J10/B  | J10/C  | J10/D  | J10/E  |
          |--------------+---------+--------+--------+--------+--------|
          |   | IR/FONT> | Closed  |  Open  |  Open  |  Open  |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          |   |   IRQ3   |  Open   | Closed |  Open  |  Open  |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          |   |   IRQ4   |  Open   |  Open  | Closed |  Open  |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          | » |   IRQ5   |  Open   |  Open  |  Open  | Closed |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          |   |   IRQ6   |  Open   |  Open  |  Open  |  Open  | Closed |
          |---+----------+---------+--------+--------+--------+--------|
          |   |   IRQ7   |  Open   |  Open  |  Open  |  Open  |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          |   |  IRQ10   |  Open   |  Open  |  Open  |  Open  |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          |   |  IRQ11   |  Open   |  Open  |  Open  |  Open  |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          |   |  IRQ12   |  Open   |  Open  |  Open  |  Open  |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          |   |  IRQ15   |  Open   |  Open  |  Open  |  Open  |  Open  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                INTERRUPT SELECTION (CON’T)                 |
          |------------------------------------------------------------|
          |   Setting    |  J10/F  | J10/G  | J10/H  | J10/I  | J10/J  |
          |--------------+---------+--------+--------+--------+--------|
          |   | IR/FONT> |  Open   |  Open  |  Open  |  Open  |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          |   |   IRQ3   |  Open   |  Open  |  Open  |  Open  |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          |   |   IRQ4   |  Open   |  Open  |  Open  |  Open  |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          | » |   IRQ5   |  Open   |  Open  |  Open  |  Open  |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          |   |   IRQ6   |  Open   |  Open  |  Open  |  Open  |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          |   |   IRQ7   | Closed  |  Open  |  Open  |  Open  |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          |   |  IRQ10   |  Open   | Closed |  Open  |  Open  |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          |   |  IRQ11   |  Open   |  Open  | Closed |  Open  |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          |   |  IRQ12   |  Open   |  Open  |  Open  | Closed |  Open  |
          |---+----------+---------+--------+--------+--------+--------|
          |   |  IRQ15   |  Open   |  Open  |  Open  |  Open  | Closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 BASE I/O ADDRESS SELECTION                 |
          |------------------------------------------------------------|
          |  Setting   | S1/1  | S1/2  | S1/3  | S1/4  | S1/5  | S1/6  |
          |------------+-------+-------+-------+-------+-------+-------|
          |    | 100h  |  On   |  On   |  On   |  On   |  Off  |  On   |
          |----+-------+-------+-------+-------+-------+-------+-------|
          |    | 110h  |  Off  |  On   |  On   |  On   |  Off  |  On   |
          |----+-------+-------+-------+-------+-------+-------+-------|
          |    | 120h  |  On   |  Off  |  On   |  On   |  Off  |  On   |
          |----+-------+-------+-------+-------+-------+-------+-------|
          |    | 130h  |  Off  |  Off  |  On   |  On   |  Off  |  On   |
          |----+-------+-------+-------+-------+-------+-------+-------|
          |    | 140h  |  On   |  On   |  Off  |  On   |  Off  |  On   |
          |----+-------+-------+-------+-------+-------+-------+-------|
          | »  | 220h  |  On   |  Off  |  On   |  On   |  On   |  Off  |
          |----+-------+-------+-------+-------+-------+-------+-------|
          |    | 3B0h  |  Off  |  Off  |  On   |  Off  |  Off  |  Off  |
          |----+-------+-------+-------+-------+-------+-------+-------|
          |    | 3C0h  |  On   |  On   |  Off  |  Off  |  Off  |  Off  |
          |----+-------+-------+-------+-------+-------+-------+-------|
          |    | 3D0h  |  Off  |  On   |  Off  |  Off  |  Off  |  Off  |
          |----+-------+-------+-------+-------+-------+-------+-------|
          |    | 3E0h  |  On   |  Off  |  Off  |  Off  |  Off  |  Off  |
          |----+-------+-------+-------+-------+-------+-------+-------|
          |    | 3F0h  |  Off  |  Off  |  Off  |  Off  |  Off  |  Off  |
          |------------------------------------------------------------|
          |      Note: A total of 48 base address settings are         |
          |      available. The switches are a binary representation   |
          |      of the decimal memory addresses. S1/6 is the Most     |
          |      Significant Bit and switch S1/1 is the Least          |
          |      Significant Bit. The switches have the following      |
          |      decimal values: S1/6=512, S1/5=256, S1/4=128,         |
          |      S1/3=64, S1/2=32, S1/1=16. Turn off the switches and  |
          |      add the values of the switches that are off to obtain |
          |      the correct memory address. (Off=1, On=0)             |
          +------------------------------------------------------------+