
BOCA RESEARCH, INC.

IOAT43

Card Type          MULTI I/O
Chipset Controller National Semiconductor
I/O Options        Parallel port, Serial port (2)
Maximum DRAM       N/A

[Image]

                            CONNECTIONS

        Purpose          Location         Purpose          Location

  Serial port 2            J1       Serial port 1            J2

  Parallel port            J3

  PARALLEL PORT BASE I/O ADDRESS SELECTION

       Address                 J5/C

         LPT1            Pins 1 & 2 closed

         LPT2            Pins 2 & 3 closed

  SERIAL PORT 1 BASE I/O ADDRESS SELECTION

       Address                 J5/A

         COM1            Pins 1 & 2 closed

         COM3            Pins 2 & 3 closed

  SERIAL PORT 2 BASE I/O ADDRESS SELECTION

       Address                 J5/B

         COM2            Pins 1 & 2 closed

         COM4            Pins 2 & 3 closed

                     PARALLEL PORT INTERRUPT SELECTION

                 IRQ                                 J5/D

                   7                          Pins 2 & 3 closed

                    5                          Pins 1 & 2 closed

                     SERIAL PORT 1 INTERRUPT SELECTION

      IRQ        J5/E pins 1   J5/F pins 1    J5/G pins 1   J5/H pins 1 &
                    & 2            & 2            & 2             2

        4          Open         Closed          Open           Open

         3         Closed         Open           Open           Open

         5          Open          Open          Closed          Open

         9          Open          Open           Open          Closed

                     SERIAL PORT 2 INTERRUPT SELECTION

      IRQ        J5/E pins 2   J5/F pins 2    J5/G pins 2   J5/H pins 2 &
                    & 3            & 3            & 3             3

        3         Closed         Open           Open           Open

         4          Open         Closed          Open           Open

         5          Open          Open          Closed          Open

         9          Open          Open           Open          Closed

