UNIDENTIFIED

RS-232 DUAL I/O SHORT CARD

Card Type               Serial controller
Chip Set                Unidentified
I/O Options             Serial ports (2)
Hard Drives supported   None
Floppy drives supported None
Data Bus                8-bit ISA
Card Size               Half-length

[Image]

                                CONNECTIONS

          Function             Label           Function             Label

  Serial Port 1                CN1     Serial Port 2                CN2

                        SERIAL PORTS CONFIGURATION

  Setting                 SW1/1     SW1/2     SW1/3     SW1/4     SW1/5

  »   Port 1=COM2 Port     Off       Off       Off       Off       Off
      2=COM1

      Port 1=COM1 Port     On        Off       Off       Off        On
      2=disabled

      Port 1=COM2 Port     Off       Off       Off       Off       Off
      2=disabled

      Port 1=COM1 Port     On        On        Off       Off        On
      2=COM2

      Port 1=COM3 Port     Off       Off       On        On        Off
      2=COM4

                    SERIAL PORTS CONFIGURATION (CON’T)

  Setting                SW1/6     SW1/7     SW1/8     SW1/9     SW1/10

  »   Port 1=COM2 Port     On        On       Off        On        On
      2=COM1

      Port 1=COM1 Port    Off       Off       Off       Off        Off
      2=disabled

      Port 1=COM2 Port     On       Off       Off        On        Off
      2=disabled

      Port 1=COM1 Port    Off       Off        On       Off        Off
      2=COM2

      Port 1=COM3 Port    Off       Off       Off       Off        Off
      2=COM4

  SERIAL PORT 1 INTERRUPT SELECTION

     IRQ         SW1/5       SW1/6

    IRQ4          On          Off

    IRQ3          Off          On

  SERIAL PORT 2 INTERRUPT SELECTION

     IRQ          SW1/7       SW1/8

     IRQ3          Off         On

     IRQ4          On          Off

                       MISCELLANEOUS TECHNICAL NOTES

  If the computer already has serial ports installed the default settings
  will not work.