UNIDENTIFIED

SIO-320 DUAL SERIAL CARD

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

[Image]

                            CONNECTIONS

        Purpose          Location         Purpose          Location

  Serial port 1            CN1      Serial port 2            CN2

                         SERIAL PORT CONFIGURATION

    Port 1       Port 2      JP1/A       JP1/B       JP1/C        JP1/D
    (CN1)        (CN2)

    COM1         COM2       Pins 2 &    Pins 1 &      Open        Open
                               3           2

    COM1         COM3       Pins 2 &      Open      Pins 1 &      Open
                               3                       2

    COM1         COM4       Pins 2 &      Open        Open       Pins 1 &
                               3                                    2

    COM2         COM1       Pins 1 &    Pins 2 &      Open        Open
                               2           3

    COM2         COM3         Open      Pins 2 &    Pins 1 &      Open
                                           3           2

    COM2         COM4         Open      Pins 2 &      Open       Pins 1 &
                                           3                        2

    COM3         COM1       Pins 1 &      Open      Pins 2 &      Open
                               2                       3

    COM3         COM2         Open      Pins 1 &    Pins 2 &      Open
                                           2           3

    COM3         COM4         Open        Open      Pins 2 &     Pins 1 &
                                                       3            2

    COM4         COM1       Pins 1 &      Open        Open       Pins 2 &
                               2                                    3

    COM4         COM2         Open      Pins 1 &      Open       Pins 2 &
                                           2                        3

    COM4         COM3         Open        Open      Pins 1 &     Pins 2 &
                                                       2            3

  Note: Pins designated should be in the closed position.

                      SERIAL PORT INTERRUPT SELECTION

   Port 1 (CN1)      Port 2 (CN2)         JP2/A               JP2/B

       IRQ4              IRQ3           Pins 2 & 3      Pins1 & 2 closed
                                          closed

       IRQ3              IRQ4           Pins 1 & 2      Pins 2 & 3 closed
                                          closed