UNIDENTIFIED

AT-420GW SUPER I/O CARD

Chipset                 Winbond
Data Bus                16-bit ISA
Card Size               Half height, half length
Hard Drives Supported   Two IDE(AT) devices
Floppy Drives Supported Two 360KB, 720KB, 1.2MB, or 1.44MB drives

[Image]

                                CONNECTIONS

         Function            Label            Function            Label

  40-pin IDE(AT)              JP1      2-pin drive active LED      JP8
  connector

  16-pin game port            JP2      34-pin cable connector      JP9
                                       - floppy drive

  10-pin serial port 1 -      JP3      25-pin parallel port -     JP15
  internal                             external

  9-pin serial port 2 -       JP4
  external

                        USER CONFIGURABLE SETTINGS

                   Setting                      Label        Position

  »   IDE IOR signal from mainboard               J1         Pins 2 & 3
                                                              closed

      IDE IOR signal from chipset                 J1         Pins 1 & 2
                                                              closed

  »   IDE IOW signal from mainboard               J2         Pins 2 & 3
                                                              closed

      IDE IOW signal from chipset                 J2         Pins 1 & 2
                                                              closed

  »   Floppy drive order is normal (A:, B:)     JP6/A        Pins 1 & 2
                                                              closed

      Floppy drive order is reversed (B:,       JP6/A        Pins 2 & 3
      A:)                                                     closed

  »   Floppy address is 3F0h                    JP6/B        Pins 2 & 3
                                                              closed

      Floppy address is 370h                    JP6/B        Pins 1 & 2
                                                              closed

  »   IDE(AT) interface enabled                 JP6/C        Pins 1 & 2
                                                              closed

      IDE(AT) interface disabled                JP6/C        Pins 2 & 3
                                                              closed

  »   IDE(AT) address is 1F0h                   JP6/D        Pins 2 & 3
                                                              closed

      IDE(AT) address is 170h                   JP6/D        Pins 1 & 2
                                                              closed

  »   Floppy controller enabled                 JP6/E        Pins 1 & 2
                                                              closed

      Floppy controller disabled                JP6/E        Pins 2 & 3
                                                              closed

      Parallel port is unidirectional            JP11         Closed

      Parallel port is bidirectional             JP11          Open

      Game port enabled                          JP16         Closed

      Game port disabled                         JP16          Open

                      SERIAL PORT 1 ADDRESS SELECTION

           Setting                   JP9/A                  JP9/B

  »       3F8h (COM1:)         Pins 1 & 2 closed      Pins 2 & 3 closed

          3E8h (COM3:)         Pins 2 & 3 closed      Pins 1 & 2 closed

          2E8h (COM4:)         Pins 1 & 2 closed      Pins 1 & 2 closed

            Disabled           Pins 2 & 3 closed      Pins 2 & 3 closed

               SERIAL PORT 2 ADDRESS SELECTION

       Setting              JP9/C                JP9/D

    2F8h (COM2:)       Pins 1 & 2 closed   Pins 2 & 3 closed

    3E8h (COM3:)       Pins 1 & 2 closed   Pins 1 & 2 closed

    2E8h (COM4:)       Pins 2 & 3 closed   Pins 1 & 2 closed

      Disabled         Pins 2 & 3 closed   Pins 2 & 3 closed

                      PARALLEL PORT ADDRESS SELECTION

           Setting                   JP9/E                  JP9/F

  »           378h             Pins 2 & 3 closed      Pins 1 & 2 closed

              278h             Pins 1 & 2 closed      Pins 2 & 3 closed

              3BCh             Pins 1 & 2 closed      Pins 1 & 2 closed

            Disabled           Pins 2 & 3 closed      Pins 2 & 3 closed

                     SERIAL PORT 1 INTERRUPT SELECTION

       Setting            JP12/A            JP12/B            JP12/C

          IRQ3             Open             Closed             Open

  »       IRQ4            Closed             Open              Open

          IRQ5             Open              Open             Closed

                     SERIAL PORT 2 INTERRUPT SELECTION

       Setting            JP12/A            JP12/B            JP12/C

  »       IRQ3            Closed             Open              Open

          IRQ4             Open             Closed             Open

          IRQ5             Open              Open             Closed

                     PARALLEL PORT INTERRUPT SELECTION

          Setting                  JP12/G                  JP12/H

             IRQ5                   Open                   Closed

  »          IRQ7                  Closed                   Open