SIIG, INC.

TWINCOM PROFESSIONAL

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

[Image]

                                CONNECTIONS

       Purpose           Location           Purpose           Location

  10-pin serial port        JP2        25-pin serial port        S1
  interface                            connector

                        SERIAL PORT 1 CONFIGURATION

          COM             JP3/A        JP3/B        JP3/C        JP3/D

  »         COM1        Pins 1 & 2      Open        Open         Open
        (3F8h-3FFh)       closed

            COM2           Open      Pins 1 & 2     Open         Open
        (2F8h-2FFh)                    closed

            COM3           Open         Open      Pins 1 & 2     Open
        (3E8h-3EFh)                                closed

            COM4           Open         Open        Open       Pins 1 & 2
        (2E8h-2EFh)                                             closed

         Disabled          Open         Open        Open         Open

                     SERIAL PORT 1 INTERRUPT SELECTION

        IRQ              JP4/A         JP4/B         JP4/C       JP4/D

  »         4          PIns 1 & 2       Open         Open         Open
                        closed

           2/9         Pins 2 & 3       Open         Open         Open
                        closed

            3            Open        Pins 2 & 3      Open         Open
                                       closed

            5            Open        Pins 1 & 2      Open         Open
                                       closed

        Disabled         Open           Open         Open         Open

                        SERIAL PORT 2 CONFIGURATION

          COM             JP3/A        JP3/B        JP3/C        JP3/D

  »      Disabled          Open         Open        Open         Open

            COM1        Pins 2 & 3      Open        Open         Open
        (3F8h-3FFh)       closed

            COM2           Open      Pins 2 & 3     Open         Open
        (2F8h-2FFh)                    closed

            COM3           Open         Open      Pins 2 & 3     Open
        (3E8h-3EFh)                                closed

            COM4           Open         Open        Open       Pins 2 & 3
        (2E8h-2EFh)                                             closed

                     SERIAL PORT 2 INTERRUPT SELECTION

        IRQ             JP4/A       JP4/B         JP4/C         JP4/D

  »     Disabled        Open         Open         Open           Open

           2/9          Open         Open       Pins 2 & 3       Open
                                                 closed

            3           Open         Open         Open        Pins 2 & 3
                                                                closed

            4           Open         Open       Pins 1 & 2       Open
                                                 closed

            5           Open         Open         Open        Pins 1 & 2
                                                                closed

                      SERIAL PORT 2 ACTIVATION

               Chip                             Socket

              16550                               U2

               1488                               U4

               1489                               U6

  Note: To activate serial port 2 upgrade chips must be installed.