OPTIVISION, INC.

MPEG-1 GENLOCK DECODER

Card Type                   MPEG decoder
Video Chip Set              Unidentified
Maximum Playback Supported  720 x 480 (NTSC), 720 x 576 (PAL)
Highest Resolution          Unidentified
Supported
Maximum Video Memory        None
Data Bus                    16-bit ISA
Video Types Supported       XVGA

[Image]

                                CONNECTIONS

          Function            Label            Function             Label

  S-video out                  CN1     Composite video out           J2

  Genlock                      J1      Audio out                     J3

                        BASE I/O ADDRESS SELECTION

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

      000h   On      On      On      On      On      On      On      On

      004h   Off     On      On      On      On      On      On      On

      008h   On      Off     On      On      On      On      On      On

      00Ch   Off     Off     On      On      On      On      On      On

      010h   On      On      Off     On      On      On      On      On

  »   208h   On      Off     On      On      On      On      On     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 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: SW1/8=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        J12       J13        J14       J15       J16        J17

      2/9     Open       Open      Open       Open      Open      Closed

       3      Open       Open      Open       Open      Open       Open

       4      Open       Open      Open       Open      Open       Open

  »    5      Open       Open      Open       Open      Open       Open

       6      Open       Open      Open       Open      Open       Open

       7      Open       Open      Open       Open      Open       Open

       10     Open       Open      Open       Open     Closed      Open

       11     Open       Open      Open      Closed     Open       Open

       12     Open       Open     Closed      Open      Open       Open

       14     Open      Closed     Open       Open      Open       Open

       15    Closed      Open      Open       Open      Open       Open

                        INTERRUPT SELECTION (CON’T)

     IRQ          J18         J19         J20         J21          J22

       2/9       Open        Open         Open        Open        Open

        3        Open        Open         Open        Open       Closed

        4        Open        Open         Open       Closed       Open

  »     5        Open        Open        Closed       Open        Open

        6        Open       Closed        Open        Open        Open

        7       Closed       Open         Open        Open        Open

        10       Open        Open         Open        Open        Open

        11       Open        Open         Open        Open        Open

        12       Open        Open         Open        Open        Open

        14       Open        Open         Open        Open        Open

        15       Open        Open         Open        Open        Open