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       # SEALEVEL SYSTEMS, INC.
       
          PIO-48
       
          Card Type           Parallel card                              
          Chip Set            Unidentified                               
          I/O Options         Parallel ports (2), 40-pin connectors (2)  
          Data Bus            8-bit ISA                                  
          Card Size           Half-length, full-height                   
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |       Function       | Label |      Function       | Label |
          |----------------------+-------+---------------------+-------|
          | Parallel port 1      |  J1   | Parallel port 2     |  J3   |
          |----------------------+-------+---------------------+-------|
          | 40-pin connector A   |  J2   | 40-pin connector B  |  J4   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |                Function                | Label | Position  |
          |----------------------------------------+-------+-----------|
          | Wait State enabled                     | SW1/8 |    On     |
          |----------------------------------------+-------+-----------|
          | Wait State disabled                    | SW1/8 |    Off    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 BASE I/O ADDRESS SELECTION                 |
          |------------------------------------------------------------|
          |Setting | SW1/1 | SW1/2 | SW1/3 |SW1/4 |SW1/5 |SW1/6 |SW1/7 |
          |--------+-------+-------+-------+------+------+------+------|
          |  280h  |  Off  |  On   |  Off  |  On  |  On  |  On  |  On  |
          |--------+-------+-------+-------+------+------+------+------|
          |  2A0h  |  Off  |  On   |  Off  |  On  | Off  |  On  |  On  |
          |--------+-------+-------+-------+------+------+------+------|
          |  1F8   |  Off  |  Off  |  Off  | Off  | Off  | Off  |  On  |
          |--------+-------+-------+-------+------+------+------+------|
          |  2F8h  |  Off  |  Off  |  Off  | Off  | Off  |  On  | Off  |
          |--------+-------+-------+-------+------+------+------+------|
          |  378h  |  Off  |  Off  |  Off  | Off  |  On  | Off  | Off  |
          |--------+-------+-------+-------+------+------+------+------|
          |  3B8h  |  Off  |  Off  |  Off  |  On  | Off  | Off  | Off  |
          |--------+-------+-------+-------+------+------+------+------|
          |  3D8h  |  Off  |  Off  |  On   | Off  | Off  | Off  | Off  |
          |--------+-------+-------+-------+------+------+------+------|
          |  3E8h  |  Off  |  On   |  Off  | Off  | Off  | Off  | Off  |
          |--------+-------+-------+-------+------+------+------+------|
          |  3F0h  |  On   |  Off  |  Off  | Off  | Off  | Off  | Off  |
          |--------+-------+-------+-------+------+------+------+------|
          |  3F8h  |  Off  |  Off  |  Off  | Off  | Off  | Off  | Off  |
          |------------------------------------------------------------|
          |                           Note:                            |
          |                                                            |
          |A total of 255 base address settings are available. The     |
          |switches are a binary representation of the decimal memory  |
          |addresses. SW1/7 is the Most Significant Bit and switch     |
          |SW1/1 is the Least Significant Bit. The switches have the   |
          |following decimal values: SW1/7=512, SW1/6=256, SW1/5=128,  |
          |SW1/4=64, SW1/3=32, SW1/2=16, SW1/1=8. Turn off the switches|
          |and add the values of the switches to obtain the correct    |
          |memory address. (Off=1, On=0)                               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |            PARALLEL PORT 1 INTERRUPT SELECTION             |
          |------------------------------------------------------------|
          | IRQ  |  J5/A  |  J5/B  |  J5/C  |  J5/D  |  J5/E  |  J5/F  |
          |------+--------+--------+--------+--------+--------+--------|
          | IRQ2 | Closed |  Open  |  Open  |  Open  |  Open  |  Open  |
          |------+--------+--------+--------+--------+--------+--------|
          | IRQ3 |  Open  | Closed |  Open  |  Open  |  Open  |  Open  |
          |------+--------+--------+--------+--------+--------+--------|
          | IRQ4 |  Open  |  Open  | Closed |  Open  |  Open  |  Open  |
          |------+--------+--------+--------+--------+--------+--------|
          | IRQ5 |  Open  |  Open  |  Open  | Closed |  Open  |  Open  |
          |------+--------+--------+--------+--------+--------+--------|
          | IRQ6 |  Open  |  Open  |  Open  |  Open  | Closed |  Open  |
          |------+--------+--------+--------+--------+--------+--------|
          | IRQ7 |  Open  |  Open  |  Open  |  Open  |  Open  | Closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |            PARALLEL PORT 2 INTERRUPT SELECTION             |
          |------------------------------------------------------------|
          | IRQ  |  J6/A  |  J6/B  |  J6/C  |  J6/D  |  J6/E  |  J6/F  |
          |------+--------+--------+--------+--------+--------+--------|
          | IRQ2 | Closed |  Open  |  Open  |  Open  |  Open  |  Open  |
          |------+--------+--------+--------+--------+--------+--------|
          | IRQ3 |  Open  | Closed |  Open  |  Open  |  Open  |  Open  |
          |------+--------+--------+--------+--------+--------+--------|
          | IRQ4 |  Open  |  Open  | Closed |  Open  |  Open  |  Open  |
          |------+--------+--------+--------+--------+--------+--------|
          | IRQ5 |  Open  |  Open  |  Open  | Closed |  Open  |  Open  |
          |------+--------+--------+--------+--------+--------+--------|
          | IRQ6 |  Open  |  Open  |  Open  |  Open  | Closed |  Open  |
          |------+--------+--------+--------+--------+--------+--------|
          | IRQ7 |  Open  |  Open  |  Open  |  Open  |  Open  | Closed |
          +------------------------------------------------------------+