MITSUMI ELECTRONICS

INTERFACE CARD

Card Type               CD-ROM interface card
Chip Set                Unidentified
Maximum Onboard Memory  None
I/O Options             Audio in, audio (2), CD-ROM interface connector
Data Bus                16-bit ISA
Floppy drives supported None

[Image]

                                CONNECTIONS

           Function             Label           Function            Label

  Audio in                      CN1     Audio left channel           J1

  CD-ROM interface connector    CN2     Audio right channel          J2

                        BASE I/O ADDRESS SELECTION

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

  »   300h   Off     Off     On      On      On      On      On      On

      304h   Off     Off     On      On      On      On      On     Off

      308h   Off     Off     On      On      On      On     Off      On

      30Ch   Off     Off     On      On      On      On     Off     Off

      310h   Off     Off     On      On      On     Off      On      On

      3ECh   Off     Off     Off     Off    Off      On     Off     Off

      3F0h   Off     Off     Off     Off    Off     Off      On      On

      3F4h   Off     Off     Off     Off    Off     Off      On     Off

      3F8h   Off     Off     Off     Off    Off     Off     Off      On

      3FCh   Off     Off     Off     Off    Off     Off     Off     Off

            Note:A total of 255 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: SW1/1=512, SW1/2=256, SW1/3=128, SW1/4=64,
            SW1/5=32, SW1/6=16, SW1/7=8, and SW1/8=4. Turn off the
            switches and add the values of the switches to obtain the
            correct memory address. (Off=1, On=0)

                           DMA CHANNEL SELECTION

      Channel             JP1/A             JP1/B             JP1/C

  »        5             Closed             Open               Open

           6              Open             Closed              Open

           7              Open              Open              Closed

                            INTERRUPT SELECTION

     IRQ         JP2/A       JP2/B       JP2/C       JP2/D        JP2/E

       2/9      Closed       Open         Open        Open        Open

        3        Open       Closed        Open        Open        Open

        5        Open        Open        Closed       Open        Open

  »     10       Open        Open         Open       Closed       Open

        11       Open        Open         Open        Open       Closed

                       MISCELLANEOUS TECHNICAL NOTE

            Note: This interface card work in conjunction with the
            Mitsumi Internal CD-ROM drive (Ver.1.0).