DIAMOND FLOWER, INC.

MIO-550 (REV.C/D)

Card Type               Hard drive controller
Hard Drives supported   Two IDE (AT) drives
Floppy drives supported Two 360KB, 720KB, 1.2MB, or 1.44MB drives
Data Bus                16-bit ISA
Card Size               Half-length, full-height

[Image]

                                CONNECTIONS

        Function          Location           Function           Location

  2-pin connector -          J1       40-pin IDE(AT)               J5
  drive active LED                    connector

  34-pin cable connector     J2       9-pin serial port 1 -        J6
  - floppy drive                      external

  16-pin game port           J3       25-pin parallel port -       J8
                                      external

  10-pin serial port 2 -     J4
  internal

                        USER CONFIGURABLE SETTINGS

                 Function                      Label          Position

  »   Serial port 1 DMA enabled             JP1/pins 1 &       Closed
                                                 3

      Serial port 1 DMA disabled            JP1/pins 1 &        Open
                                                 3

  »   Serial port 2 DMA enabled             JP1/pins 2 &       Closed
                                                 4

      Serial port 2 DMA disabled            JP1/pins 2 &        Open
                                                 4

  »   1.8432MHz input clock of UART             JP2          Pins 2 & 3
      enabled                                                  closed

      7.3728MHz input clock of UART             JP2          Pins 1 & 2
      enabled                                                  closed

  »   Game port enabled                       JP3/11           Closed

      Game port disabled                      JP3/11            Open

  »   Floppy drive interface enabled          JP3/12           Closed

      Floppy drive interface disabled         JP3/12            Open

  »   IDE(AT) interface enabled               JP3/13           Closed

      IDE(AT) interface disabled              JP3/13            Open

  »   Parallel port is uni-directional          JP6            Closed

      Parallel port is bi-directional           JP6             Open

            Note:When the 1.8432MHz is selected, the MIO-550 supports up
            to 56K bps. When the 7.3728MHz clock is selected, the MIO-550
            supports up to 448K bps.

                    SERIAL PORT 1 DMA CHANNEL SELECTION

      Channel         JP5/pins 1 &   JP5/pins 3   JP5/pins 5   JP5/pins 7
                           2            & 4          & 6          & 8

  »   1 (receive)        Open          Closed        Open        Closed

      1 (transmit)     Pins 1 & 3       Open        Closed
                        closed

      3 (receive)      Pins 2 & 4      Closed        Open
                        closed

      3 (transmit)      Closed          Open        Closed        Open

            Note:When selecting DMA, make sure JP1/pins 1 & 3 are closed.

                    SERIAL PORT 2 DMA CHANNEL SELECTION

      Channel         JP5/pins 9 &    JP5/pins     JP5/pins     JP5/pins
                          10          11 & 12      13 & 14      15 & 16

      1 (receive)        Open          Closed        Open        Closed

      1 (transmit)    Pins 9 & 11       Open        Closed
                        closed

  »   3 (receive)     Pins 10 & 12     Closed        Open
                        closed

      3 (transmit)      Closed          Open        Closed        Open

            Note:When selecting DMA, make sure JP1/pins 2 & 4 are closed.

                      PARALLEL PORT ADDRESS SELECTION

           Setting                    JP3/9                 JP3/10

  »   LPT1 (378h)                     Open                  Closed

           LPT2 (278h)               Closed                  Open

             Disabled                 Open                   Open

                      SERIAL PORT 1 ADDRESS SELECTION

      Setting           JP3/1         JP3/2        JP3/3         JP3/4

  »    COM1 (3F8h)       Open         Open          Open        Closed

       COM2 (2F8h)       Open        Closed         Open         Open

       COM3 (3E8h)       Open         Open         Closed        Open

       COM4 (2E8h)      Closed        Open          Open         Open

        Disabled         Open         Open          Open         Open

                      SERIAL PORT 2 ADDRESS SELECTION

      Setting           JP3/5         JP3/6        JP3/7         JP3/8

       COM1 (3F8h)       Open         Open          Open        Closed

  »    COM2 (2F8h)       Open        Closed         Open         Open

       COM3 (3E8h)       Open         Open         Closed        Open

       COM4 (2E8h)      Closed        Open          Open         Open

        Disabled         Open         Open          Open         Open

                     SERIAL PORT 1 INTERRUPT SELECTION

       IRQ           JP4/1          JP4/2         JP4/3         JP4/4

         IRQ2        Closed         Open          Open           Open

         IRQ3         Open          Open          Open          Closed

  »      IRQ4         Open          Open         Closed          Open

         IRQ5         Open         Closed         Open           Open

                     SERIAL PORT 2 INTERRUPT SELECTION

       IRQ           JP4/5          JP4/6         JP4/7         JP4/8

         IRQ2        Closed         Open          Open           Open

  »      IRQ3         Open          Open          Open          Closed

         IRQ4         Open          Open         Closed          Open

         IRQ5         Open         Closed         Open           Open

                     PARALLEL PORT INTERRUPT SELECTION

            IRQ                     JP4/9                  JP4/10

             IRQ5                  Closed                   Open

  »   IRQ7                          Open                   Closed