
MULTITECH SYSTEMS, INC.

ISI502U

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

[Image]

                            CONNECTIONS

        Purpose          Location         Purpose          Location

  9-pin serial port        CN1      25-pin serial port       CN2

                        I/O BASE ADDRESS SELECTION

  Address   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6   SW1/7   SW1/8

     380h   On      On      On      On     Off     Off     Off      On

      100h   On      On      On      On      On     Off      On      On

      108h   Off     On      On      On      On     Off      On      On

      110h   On      Off     On      On      On     Off      On      On

      118h   Off     Off     On      On      On     Off      On      On

      120h   On      On      Off     On      On     Off      On      On

      3D8h   Off     Off     On      Off    Off     Off     Off      On

      3E0h   On      On      Off     Off    Off     Off     Off      On

      3E8h   Off     On      Off     Off    Off     Off     Off      On

      3F0h   On      Off     Off     Off    Off     Off     Off      On

      3F8h   Off     Off     Off     Off    Off     Off     Off      On

       Note:A total of 96 base address settings are available. The
       switches are a binary representation of the decimal memory
       addresses. Switch SW1/8 is the Most Significant Bit and switch
       SW1/1 is the Least Significant Bit. The switches have the
       following decimal values: switch SW1/1=8, SW1/2=16, SW1/3=32,
       SW1/4=64, SW1/5=128, SW1/6=256, SW1/7=512, SW1/8=1024. Turn off
       the switches and add the values of the switches that are off to
       obtain the correct memory address. (Off=1, On=0)

                            INTERRUPT SELECTION

     IRQ         J1/A        J1/B         J1/C        J1/D        J1/E

       3        Open       Closed        Open        Open        Open

       2/9      Closed       Open         Open        Open        Open

        4        Open        Open        Closed       Open        Open

        5        Open        Open         Open       Closed       Open

        7        Open        Open         Open        Open       Closed

  FACTORY CONFIGURED - DO NOT ALTER

      Jumper            Position

        J2                 N/A

