BOCA RESEARCH, INC.

DELL 486DX/XX REV.3 I/O CARD

  Data bus:                  16-bit, ISA

  Size:                      Half-length, full-height card

  Hard drive supported:      Two IDE (AT) Interface drives

  Floppy drives supported:   Two 360KB, 720KB, 1.2MB, or 1.44MB drives

[Image]

                              CONNECTIONS

                    Function                           Location

  25-pin parallel port                                    CN1

  10-pin serial port - external                           CN2

  10-pin serial port - internal                           J3

  40-pin IDE(AT) interface connector                      J4

  34-pin control cable connector - floppy drive           J5

  4-pin connector - drive active LED                      J6

                     SERIAL PORT 1 (CN2) CONFIGURATION

              COM/Address/IRQ                             J7

  »              COM1/3F8h/IRQ4               pins 1 & 3, 19 & 21 closed

                 COM1/3F8h/IRQ3               pins 1 & 3, 21 & 23 closed

                 COM1/3F8h/IRQ5               pins 1 & 3, 15 & 17 closed

                 COM1/3F8h/IRQ7               pins 1 & 3, 13 & 15 closed

                 COM2/2F8h/IRQ3               pins 3 & 5, 21 & 23 closed

                 COM2/2F8h/IRQ4               pins 3 & 5, 19 & 21 closed

                 COM2/2F8h/IRQ5               pins 3 & 5, 15 & 17 closed

                 COM2/2F8h/IRQ7               pins 3 & 5, 13 & 15 closed

                      SERIAL PORT INTERRUPT SELECTION

                    IRQ                                   J7

  »              COM1/3F8h/IRQ4               pins 1 & 3, 19 & 21 closed

                 COM1/3F8h/IRQ3               pins 1 & 3, 21 & 23 closed

                 COM1/3F8h/IRQ5               pins 1 & 3, 15 & 17 closed

                 COM1/3F8h/IRQ7               pins 1 & 3, 13 & 15 closed

               SERIAL PORT 1 (CN2) CONFIGURATION

        COM/Address/IRQ                       J7

         COM3/3E8h/IRQ3           pins 7 & 9, 21 & 23 closed

         COM3/3E8h/IRQ4           pins 7 & 9, 19 & 21 closed

         COM3/3E8h/IRQ5           pins 7 & 9, 15 & 17 closed

         COM3/3E8h/IRQ7           pins 7 & 9, 13 & 15 closed

         COM4/2E8h/IRQ3           pins 9 & 11, 21 & 23 closed

         COM4/2E8h/IRQ4           pins 9 & 11, 19 & 21 closed

         COM4/2E8h/IRQ5           pins 9 & 11, 15 & 17 closed

         COM4/2E8h/IRQ7           pins 9 & 11, 13 & 15 closed

            Disabled             pins 1, 3, 5, 7, 9 & 11 open

                     SERIAL PORT 2 (J3) CONFIGURATION

              COM/Address/IRQ                             J7

  »              COM2/2F8h/IRQ3               pins 4 & 6, 22 & 24 closed

                 COM2/2F8h/IRQ4               pins 4 & 6, 20 & 22 closed

                 COM2/2F8h/IRQ5               pins 4 & 6, 16 & 18 closed

                 COM2/2F8h/IRQ7               pins 4 & 6, 14 & 16 closed

                 COM1/3F8h/IRQ3               pins 2 & 4, 22 & 24 closed

                 COM1/3F8h/IRQ4               pins 2 & 4, 20 & 22 closed

                 COM1/3F8h/IRQ5               pins 2 & 4, 16 & 18 closed

                 COM1/3F8h/IRQ7               pins 2 & 4, 14 & 16 closed

                 COM3/3E8h/IRQ3              pins 8 & 10, 22 & 24 closed

                 COM3/3E8h/IRQ4              pins 8 & 10, 20 & 22 closed

                 COM3/3E8h/IRQ5              pins 8 & 10, 16 & 18 closed

                 COM3/3E8h/IRQ7              pins 8 & 10, 14 & 16 closed

                 COM4/2E8h/IRQ3              pins 10 & 12, 22 & 24 closed

                 COM4/2E8h/IRQ4              pins 10 & 12, 20 & 22 closed

                 COM4/2E8h/IRQ5              pins 10 & 12, 16 & 18 closed

                 COM4/2E8h/IRQ7              pins 10 & 12, 14 & 16 closed

                    Disabled                   pins 2, 4, 6, 8, 10 & 12
                                                         open

                     PARALLEL PORT (CN1) CONFIGURATION

              LPT/Address/IRQ                             J8

  »              LPT1/278h/IRQ7                pins 1 & 2, 4 & 5 closed

                 LPT1/278h/IRQ5                pins 1 & 2, 5 & 6 closed

                 LPT2/378h/IRQ5                pins 2 & 3, 5 & 6 closed

                 LPT2/378h/IRQ7                pins 2 & 3, 4 & 5 closed

                    Disabled                        all pins open