MITSUMI ELECTRONICS CORPORATION

EXTERNAL CD-ROM INTERFACE CARD (VER. 1)

Card Type               CD-ROM interface card
Chip Set                Unidentified
Maximum Onboard Memory  None
I/O Options             None
Data Bus                8-bit ISA
Floppy drives supported None

[Image]

                        CONNECTIONS

           Function                       Label

  CD-ROM interface connector               CN1

                        USER CONFIGURABLE SETTINGS

                  Function                      Label        Position

  »   Factory configured - do not alter         SW2/1           On

  »   Factory configured - do not alter         SW2/2           On

  »   Factory configured - do not alter         SW2/3           On

  »   Factory configured - do not alter         SW2/4           Off

  »   Factory configured - do not alter         SW2/5           Off

  »   Factory configured - do not alter         SW2/6           Off

  »   Factory configured - do not alter         SW2/7           Off

  »   Factory configured - do not alter         SW2/8           Off

                           DMA CHANNEL SELECTION

    Channel         JP2/A          JP2/B         JP2/C          JP2/D

          1         Closed        Closed          Open           Open

  »       3          Open          Open          Closed         Closed

                        BASE I/O ADDRESS SELECTION

  Setting   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6   SW1/7   SW1/8

      0h     On      On      On      On      On      On      On      On

      4h     Off     On      On      On      On      On      On      On

      8h     On      Off     On      On      On      On      On      On

      Ch     Off     Off     On      On      On      On      On      On

      10h    On      On      Off     On      On      On      On      On

  »   300h   On      On      On      On      On      On     Off     Off

      3ECh   Off     Off     On      Off    Off     Off     Off     Off

      3F0h   On      On      Off     Off    Off     Off     Off     Off

      3F4h   Off     On      Off     Off    Off     Off     Off     Off

      3F8h   On      Off     Off     Off    Off     Off     Off     Off

      3FCh   Off     Off     Off     Off    Off     Off     Off     Off

            Note:A total of 256 base address settings are available. The
            switches are a binary representation of the decimal memory
            addresses. SW1/8 is the Most Significant Bit and switch SW1/1
            is the Least Significant Bit. The switches have the following
            decimal values: SW1/8=512, SW1/7=256, SW1/6=128, SW1/5=64,
            SW1/4=32, SW1/3=16, SW1/2=8, SW1/1=4. Turn off the switches
            and add the values of the switches to obtain the correct
            memory address. (Off=1, On=0)

                            INTERRUPT SELECTION

         IRQ               JP1/A             JP1/B             JP1/C

          IRQ2            Closed             Open              Open

  »       IRQ3             Open             Closed             Open

          IRQ5             Open              Open             Closed