SIIG, INC.

I/O EXPANDER 2S

Card Type          Serial card
Chipset Controller 16550
I/O Options        Serial ports (2)
Maximum DRAM       N/A

[Image]

                            CONNECTIONS

        Purpose          Location         Purpose          Location

  25-pin serial port       SE1      9-pin serial port        SE2

                        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.