
BOCA RESEARCH, INC.

I/O 450

Card Type               Parallel/Serial card
Chip Set                AT-type GM 82C 455
Maximum Onboard Memory  None
I/O Options             Parallel port (2), serial port (2)
Data Bus                8-bit ISA
Floppy drives supported None

[Image]

                                CONNECTIONS

          Function             Label           Function             Label

  26-pin Parallel port 2        J1     9-pin serial port 1           J4

  10-pin serial port 2          J3     25-pin parallel port 1        J7

                        USER CONFIGURABLE SETTINGS

                  Function                      Label        Position

     Serial port 1 enabled                     J2/A         Pins 2 & 3
                                                              closed

      Serial port 1 disabled                    J2/A         Pins 1 & 2
                                                              closed

     Serial port 2 enabled                     J2/B         Pins 2 & 3
                                                              closed

      Serial port 2 disabled                    J2/B         Pins 1 & 2
                                                              closed

     Parallel port 1 enabled                   J2/C         Pins 2 & 3
                                                              closed

      Parallel port 1 disabled                  J2/C         Pins 1 & 2
                                                              closed

     Parallel port 2 enabled                   J2/D         Pins 2 & 3
                                                              closed

      Parallel port 2 disabled                  J2/D         Pins 1 & 2
                                                              closed

                      SERIAL PORT 1 ADDRESS SELECTION

                Setting                                J2/E

               COM1 (3F8h)                     Pins 2 & 3 closed

                COM3 (3E8h)                     Pins 1 & 2 closed

                      SERIAL PORT 2 ADDRESS SELECTION

                Setting                                J2/F

               COM2 (2F8h)                     Pins 2 & 3 closed

                COM4 (2E8h)                     Pins 1 & 2 closed

                    PARALLEL PORT 1 INTERRUPT SELECTION

                 IRQ                                 J2/G

                    5                          Pins 2 & 3 closed

                   7                          Pins 1 & 2 closed

                    PARALLEL PORT 2 INTERRUPT SELECTION

                 IRQ                                 J2/H

                   5                          Pins 2 & 3 closed

                    7                          Pins 1 & 2 closed

                     SERIAL PORT 1 INTERRUPT SELECTION

     IRQ           J2/I           J2/J           J2/K           J2/L

        3       Pins 2 & 3        Open           Open           Open
                  closed

       4          Open        Pins 2 & 3        Open           Open
                                 closed

        5          Open           Open        Pins 2 & 3        Open
                                                closed

        9          Open           Open           Open         Pins 2 & 3
                                                               closed

                     SERIAL PORT 2 INTERRUPT SELECTION

     IRQ           J2/I            J2/J          J2/K            J2/L

       3         Pins 1 &         Open          Open            Open
                  2closed

        4          Open         Pins 1 & 2       Open            Open
                                  closed

        5          Open            Open        Pins 1 & 2        Open
                                                closed

        9          Open            Open          Open         Pins 1 & 2
                                                                closed

