BRAIN BOXES

AT ONE PORT RS232

Card Type Serial card
Chip Set  Unidentified
Data Bus  8-bit ISA

[Image]

               CONNECTIONS

      Function              Label

  9-pin serial port          CN1

                       SERIAL PORT ADDRESS SELECTION

      COM port            Address             IRQ              JP1

          COM1              3F8h             IRQ4              Open

  »       COM2              2F8h             IRQ3           Pins 3 & 4
                                                              closed

          COM3              3E8h             IRQ3           Pins 5 & 6
                                                              closed

          COM4              2E8h             IRQ3           Pins 7 & 8
                                                              closed

          COM5              1A0h             IRQ3           Pins 9 & 10
                                                              closed

          COM6              1A8h             IRQ3          Pins 11 & 12
                                                              closed

          COM7              1B0h             IRQ3          Pins 13 & 14
                                                              closed

          COM8              1B8h             IRQ3          Pins 15 & 16
                                                              closed

                         SERIAL PORT IRQ SELECTION

                  IRQ                                  JP2

                   IRQ2                        Pins 11 & 12 closed

  »                IRQ3                        Pins 9 & 10 closed

                   IRQ4                         Pins 7 & 8 closed

                   IRQ5                         Pins 5 & 6 closed

                   IRQ6                         Pins 3 & 4 closed

                   IRQ7                         Pins 1 & 2 closed

                   IRQ10                       Pins 13 & 14 closed

                   IRQ11                       Pins 15 & 16 closed

                   IRQ12                       Pins 17 & 18 closed

                   IRQ14                       Pins 19 & 20 closed