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       # QUATECH, INC.
       
          MPA-200/300
       
          Card Type          I/O controller                              
          Chipset/Controller Intel                                       
          I/O Options        Serial port                                 
          Maximum DRAM       N/A                                         
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |                     Purpose                     | Location |
          |-------------------------------------------------+----------|
          | Female D-25 serial port - data communications   |   CN1    |
          | equipment                                       |          |
          |-------------------------------------------------+----------|
          | (Optional) Male D-25 serial port - data         |   CN2    |
          | terminal equipment                              |          |
          |------------------------------------------------------------|
          | Note: The MPA 200 is either DCE or DTE port equipped, but  |
          | not both                                                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     CLOCK SPEED SELECT                     |
          |------------------------------------------------------------|
          |           Speed            |              J1               |
          |----------------------------+-------------------------------|
          | ยป |          8MHz          |       Pins 1 & 2 closed       |
          |---+------------------------+-------------------------------|
          |   |          6MHz          |       Pins 2 & 3 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     INTERRUPT SHARING                      |
          |------------------------------------------------------------|
          |          Setting           |              J4               |
          |----------------------------+-------------------------------|
          |          Enabled           |       Pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |          Disabled          |       Pins 2 & 3 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    INTERRUPT SELECTION                     |
          |------------------------------------------------------------|
          |         IRQ         |         J5         |       J6        |
          |---------------------+--------------------+-----------------|
          |      IR/FONT>       | Pins 1 & 7 closed  |      Open       |
          |---------------------+--------------------+-----------------|
          |        IRQ3         | Pins 2 & 8 closed  |      Open       |
          |---------------------+--------------------+-----------------|
          |        IRQ4         | Pins 3 & 9 closed  |      Open       |
          |---------------------+--------------------+-----------------|
          |        IRQ5         | Pins 4 & 10 closed |      Open       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    INTERRUPT SELECTION                     |
          |------------------------------------------------------------|
          |       IRQ        |         J5         |         J6         |
          |------------------+--------------------+--------------------|
          |       IRQ6       | Pins 5 & 11 closed |        Open        |
          |------------------+--------------------+--------------------|
          |       IRQ7       | Pins 6 & 12 closed |        Open        |
          |------------------+--------------------+--------------------|
          |      IRQ10       |        Open        | Pins 1 & 6 closed  |
          |------------------+--------------------+--------------------|
          |      IRQ11       |        Open        | Pins 2 & 7 closed  |
          |------------------+--------------------+--------------------|
          |      IRQ12       |        Open        | Pins 3 & 8 closed  |
          |------------------+--------------------+--------------------|
          |      IRQ14       |        Open        | Pins 4 & 9 closed  |
          |------------------+--------------------+--------------------|
          |      IRQ15       |        Open        | Pins 5 & 10 closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    DMA TRANSMIT CHANNEL                    |
          |------------------------------------------------------------|
          |          Setting           |              J10              |
          |----------------------------+-------------------------------|
          |         Channel 1          |   Pins 1 & 7, 2 & 8 closed    |
          |----------------------------+-------------------------------|
          |         Channel 2          |   Pins 3 & 9, 4 & 10 closed   |
          |----------------------------+-------------------------------|
          |         Channel 3          |  Pins 5 & 11, 6 & 12 closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    DMA RECEIVE CHANNEL                     |
          |------------------------------------------------------------|
          |       Setting       |                 J11                  |
          |---------------------+--------------------------------------|
          |      Channel 1      |       Pins 1 & 7, 2 & 8 closed       |
          |---------------------+--------------------------------------|
          |      Channel 2      |      Pins 3 & 9, 4 & 10 closed       |
          |---------------------+--------------------------------------|
          |      Channel 3      |      Pins 5 & 11, 6 & 12 closed      |
          |------------------------------------------------------------|
          |   Note: Do not use the same channel for both DMA transmit  |
          |   and receive functions. Closing the same Pins on J10 and  |
          |   J11 will result in damage to the system.                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    LINE DRIVER CONTROL                     |
          |------------------------------------------------------------|
          |                Setting                 |        J7         |
          |----------------------------------------+-------------------|
          |  Drivers and receivers always enabled  | Pins 1 & 2, 4 & 5 |
          |                                        |      closed       |
          |----------------------------------------+-------------------|
          |  Drivers and receivers controlled by   | Pins 2 & 3, 5 & 6 |
          |          programming register          |      closed       |
          |------------------------------------------------------------|
          | Note: Location of J7 is not specified on manufacturer      |
          | documentation.                                             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  SYNCA/RLEN CONFIGURATION                  |
          |------------------------------------------------------------|
          |           Setting            |             J8              |
          |------------------------------+-----------------------------|
          |            SYNCA             |           Closed            |
          |------------------------------+-----------------------------|
          |             RLEN             |            Open             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 I/O ADDRESS CONFIGURATION                  |
          |------------------------------------------------------------|
          |   Address   |          SW1           |         SW2         |
          |-------------+------------------------+---------------------|
          |    300h     |  1, 2, 3, 4, 5 & 6 on  |  1, 2, 3, 4, 5 & 6  |
          |             |                        |         on          |
          |-------------+------------------------+---------------------|
          |    240h     |  1, 2, 3, 4, 5, 6 & 8  |  1, 3, 4, 5 & 6 on  |
          |             |           on           |                     |
          |-------------+------------------------+---------------------|
          |    6FC4h    |        1 & 4 on        |     3, 4 & 5 on     |
          |------------------------------------------------------------|
          |   Note:The address range for the DMM-100 is from 0 to      |
          |   FFFFh. The switches are a binary representation of the   |
          |   addresses. The switches have the following decimal       |
          |   values: SW1/1=8, SW1/2=4, SW1/3=2, SW1/4=1, SW1/5=8,     |
          |   SW1/6=4, SW1/7=2, SW1/8=1, SW2/1=8, SW2/2=4, SW2/3=2,    |
          |   SW2/4=1, SW2/5=8, SW2/6=4.                               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                FACTORY CONFIGURED SETTINGS                 |
          |------------------------------------------------------------|
          |            Jumper            |           Setting           |
          |------------------------------+-----------------------------|
          |              J2              |             N/A             |
          |------------------------------+-----------------------------|
          |              J3              |             N/A             |
          +------------------------------------------------------------+