
DECISION COMPUTER INTERNATIONAL CO., LTD.

PCCOM 8-BIT ISA 8-PORT DB-37 RS-232/422

Card Type   Serial
Chipset     GoldStar
I/O Options Serial ports (8)
Data Bus    8-bit ISA

[Image]

                                CONNECTIONS

          Function             Label           Function            Label

  Serial ports via DB-37        J1      Daisy chain connector       J3
  port                                  (see pinout below)

  Unidentified                  J2

            Note:Standard DB-25 serial ports are provided on an included
            adapter cable.

                                J3 PINOUT

           Function             Pin            Function             Pin

  Daisy chain out               1     Daisy chain in                 3

  Daisy chain out               2     Daisy chain in                 4

                        USER CONFIGURABLE SETTINGS

                   Setting                      Label        Position

     Interrupt master                           JP1          Closed

      Interrupt slave                            JP1           Open

     Factory configured - do not alter         SW3/7           On

     Interrupt vector enabled                  SW3/8           Off

      Interrupt vector disabled                 SW3/8           On

            Note:Only one board per system should be set to interrupt
            master.

                   BASE I/O ADDRESS

  Setting    SW1/1      SW1/2      SW1/3      SW1/4

   000h        On         On        On         On

   040h        On         On        On         Off

   080h        On         On        Off        On

   0C0h        On         On        Off        Off

   100h        On        Off        On         On

   140h        On        Off        On         Off

   180h        On        Off        Off        On

   1C0h        On        Off        Off        Off

   200h       Off         On        On         On

   240h       Off         On        On         Off

   280h       Off         On        Off        On

   2C0h       Off         On        Off        Off

   300h       Off        Off        On         On

   340h       Off        Off        On         Off

   380h       Off        Off        Off        On

   3C0h       Off        Off        Off        Off

                                 INTERRUPT

  Setting    SW2/1      SW2/2      SW2/3     SW2/4      SW2/5     SW2/6

   IRQ2        On        Off        Off       Off        Off       Off

   IRQ3       Off         On        Off       Off        Off       Off

   IRQ4       Off        Off        On        Off        Off       Off

   IRQ5       Off        Off        Off        On        Off       Off

   IRQ6       Off        Off        Off       Off        On        Off

   IRQ7       Off        Off        Off       Off        Off        On

   Slave      Off        Off        Off       Off        Off       Off

                             INTERRUPT VECTOR

  Setting      SW3/1     SW3/2     SW3/3     SW3/4      SW3/5     SW3/6

    000h        On        On         On        On        On         On

    010h        On        On         On        On        On        Off

    020h        On        On         On        On        Off        On

    030h        On        On         On        On        Off       Off

    040h        On        On         On       Off        On         On

    3B0h        Off       Off       Off        On        Off       Off

    3C0h        Off       Off       Off       Off        On         On

    3D0h        Off       Off       Off       Off        On        Off

    3E0h        Off       Off       Off       Off        Off        On

    3F0h        Off       Off       Off       Off        Off       Off

            Note:A total of 64 vector address settings are available. The
            switches are a binary representation of the decimal memory
            addresses. SW3/1 is the Most Significant Bit and switch SW3/6
            is the Least Significant Bit. The switches have the following
            decimal values: SW3/1=512, SW3/2=256, SW3/3=128, SW3/4=64,
            SW3/5=32, SW3/6=16. Turn off the switches and add the values
            of the switches that are off to obtain the correct address.
            (Off=1, On=0)

