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       # SIIG, INC.
       
          I/O EXPANDER 2S
       
          Card Type          Serial card                                 
          Chipset Controller 16550                                       
          I/O Options        Serial ports (2)                            
          Maximum DRAM       N/A                                         
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |      Purpose      | Location |     Purpose      | Location |
          |-------------------+----------+------------------+----------|
          | 25-pin serial     |   SE1    | 9-pin serial     |   SE2    |
          | port              |          | port             |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                SERIAL PORT 1 CONFIGURATION                 |
          |------------------------------------------------------------|
          |         COM          |  S2/A   |  S2/B   |  S2/C  |  S2/D  |
          |----------------------+---------+---------+--------+--------|
          | » | COM1 (3F8h-3FFh) |  Open   |  Open   |  Open  | Closed |
          |---+------------------+---------+---------+--------+--------|
          |   | COM2 (2F8h-2FFh) |  Open   |  Open   | Closed |  Open  |
          |---+------------------+---------+---------+--------+--------|
          |   | COM3 (3E8h-3EFh) |  Open   | Closed  |  Open  |  Open  |
          |---+------------------+---------+---------+--------+--------|
          |   | COM4 (2E8h-2EFh) | Closed  |  Open   |  Open  |  Open  |
          |---+------------------+---------+---------+--------+--------|
          |   |     Disabled     |  Open   |  Open   |  Open  |  Open  |
          +------------------------------------------------------------+
       
       +-------------------------------------------------------------------------+
       |                    SERIAL PORT 1 INTERRUPT SELECTION                    |
       |-------------------------------------------------------------------------|
       |   IRQ    |JP3/A |JP3/B |JP3/C |JP3/D |JP3/E |JP3/F |JP3/G |JP3/H |JP3/I |
       |----------+------+------+------+------+------+------+------+------+------|
       |»|   4    | Open |Closed| Open | Open | Open | Open | Open | Open | Open |
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |  2/9   | Open | Open | Open | Open |Closed| Open | Open | Open | Open |
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |   3    |Closed| Open | Open | Open | Open | Open | Open | Open | Open |
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |   5    | Open | Open |Closed| Open | Open | Open | Open | Open | Open |
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |   7    | Open | Open | Open |Closed| Open | Open | Open | Open | Open |
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |   10   | Open | Open | Open | Open | Open |Closed| Open | Open | Open |
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |   11   | Open | Open | Open | Open | Open | Open |Closed| Open | Open |
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |   12   | Open | Open | Open | Open | Open | Open | Open |Closed| Open |
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |   15   | Open | Open | Open | Open | Open | Open | Open | Open |Closed|
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |Disabled| Open | Open | Open | Open | Open | Open | Open | Open | Open |
       +-------------------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                SERIAL PORT 2 CONFIGURATION                 |
          |------------------------------------------------------------|
          |         COM          |  S1/A   |  S1/B   |  S1/C  |  S1/D  |
          |----------------------+---------+---------+--------+--------|
          | » | COM2 (2F8h-2FFh) |  Open   |  Open   | Closed |  Open  |
          |---+------------------+---------+---------+--------+--------|
          |   | COM1 (3F8h-3FFh) |  Open   |  Open   |  Open  | Closed |
          |---+------------------+---------+---------+--------+--------|
          |   | COM3 (3E8h-3EFh) |  Open   | Closed  |  Open  |  Open  |
          |---+------------------+---------+---------+--------+--------|
          |   | COM4 (2E8h-2EFh) | Closed  |  Open   |  Open  |  Open  |
          |---+------------------+---------+---------+--------+--------|
          |   |     Disabled     |  Open   |  Open   |  Open  |  Open  |
          +------------------------------------------------------------+
       
       +-------------------------------------------------------------------------+
       |                    SERIAL PORT 2 INTERRUPT SELECTION                    |
       |-------------------------------------------------------------------------|
       |   IRQ    |JP1/A |JP1/B |JP1/C |JP1/D |JP1/E |JP1/F |JP1/G |JP1/H |JP1/I |
       |----------+------+------+------+------+------+------+------+------+------|
       |»|   3    |Closed| Open | Open | Open | Open | Open | Open | Open | Open |
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |  2/9   | Open | Open | Open | Open |Closed| Open | Open | Open | Open |
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |   4    | Open |Closed| Open | Open | Open | Open | Open | Open | Open |
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |   5    | Open | Open |Closed| Open | Open | Open | Open | Open | Open |
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |   7    | Open | Open | Open |Closed| Open | Open | Open | Open | Open |
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |   10   | Open | Open | Open | Open | Open |Closed| Open | Open | Open |
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |   11   | Open | Open | Open | Open | Open | Open |Closed| Open | Open |
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |   12   | Open | Open | Open | Open | Open | Open | Open |Closed| Open |
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |   15   | Open | Open | Open | Open | Open | Open | Open | Open |Closed|
       |-+--------+------+------+------+------+------+------+------+------+------|
       | |Disabled| Open | Open | Open | Open | Open | Open | Open | Open | Open |
       +-------------------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  SERIAL PORT 2 ACTIVATION                  |
          |------------------------------------------------------------|
          |           Chip            |             Socket             |
          |---------------------------+--------------------------------|
          |           16550           |               U7               |
          |---------------------------+--------------------------------|
          |           1489            |               U9               |
          |---------------------------+--------------------------------|
          |           1488            |              U12               |
          |------------------------------------------------------------|
          | Note: To activate serial port 2 upgrade chips must be      |
          | installed.                                                 |
          +------------------------------------------------------------+