
DIGITAL COMMUNICATION ASSOCIATES, INC.

INTELLIGENT SYNCHRONOUS COMMUNICATIONS ADAPTER

Card Type          I/O controller
Chipset/Controller Texas Instruments
I/O Options        Serial port
Maximum DRAM       N/A

[Image]

         CONNECTIONS

    Purpose       Location

  Serial port       CN1

                         I/O ADDRESS CONFIGURATION

    Address          JB2/A         JB2/B          JB2/C         JB2/D

       380h       Pins 2 & 3    Pins 1 & 2     Pins 2 & 3    Pins 1 & 2
                    closed         closed        closed         closed

        370h       Pins 2 & 3    Pins 1 & 2     Pins 1 & 2    Pins 1 & 2
                    closed         closed        closed         closed

        378h       Pins 2 & 3    Pins 2 & 3     Pins 1 & 2    Pins 1 & 2
                    closed         closed        closed         closed

        388h       Pins 2 & 3    Pins 2 & 3     Pins 2 & 3    Pins 1 & 2
                    closed         closed        closed         closed

        390h       Pins 2 & 3    Pins 1 & 2     Pins 1 & 2    Pins 2 & 3
                    closed         closed        closed         closed

        398h       Pins 2 & 3    Pins 2 & 3     Pins 1 & 2    Pins 2 & 3
                    closed         closed        closed         closed

        3A0h       Pins 2 & 3    Pins 1 & 2     Pins 2 & 3    Pins 2 & 3
                    closed         closed        closed         closed

                             INTERRUPT SELECT

         IRQ               JB1/A             JB1/B             JB1/C

         IRQ3            Closed             Open              Open

          IRQ4             Open             Closed             Open

          IRQ7             Open              Open             Closed

                        DMA CONFIGURATION

    DRQ       DACK       JB1/D      JB1/E      JB1/F     JB1/G

     1          1       Closed      Open      Closed      Open

     1          3       Closed      Open       Open      Closed

     3          1        Open      Closed     Closed      Open

     3          3        Open      Closed      Open      Closed

       FACTORY CONFIGURED SETTINGS

       Jumper              Setting

         J4           Pins 1 & 2 closed

         J5           Pins 1 & 2 closed

         J7                 Closed

