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    Video Capture: Troubleshooting Hardware Conflicts

    Contents:

    • HARDWARE CONFLICTS - GENERAL NOTES
    • WHAT IS AN I/O ADDRESS?
    • WHAT IS AN IRQ?
    • AVOIDING HARDWARE CONFLICTS
    • SYMPTOMS OF AN I/O ADDRESS CONFLICT
    • SYMPTOMS OF AN IRQ CONFLICT
    • TROUBLESHOOTING HARDWARE CONFLICTS
    
    

    HARDWARE CONFLICTS - GENERAL NOTES

    
       Hardware conflicts are one of the most common problems encountered when
    
       adding the Intel Smart Video Recorder or Intel Smart Video Recorder Pro
    
       to your computer.  Hardware conflicts occur when the Intel Smart Video
    
       Recorder or Intel Smart Video Recorder Pro and another device in your
    
       computer share the same I/O address or interrupt (IRQ) setting.
    
    
    
    

    WHAT IS AN I/O ADDRESS?

    
       The I/O address is the path along which the add-in device sends and
    
       receives data and instructions.
    
    
    
       When two devices are assigned to the same I/O address, one or both of
    
       the devices may not operate reliably.
    
    
    
       The Intel Smart Video Recorder or Intel Smart Video Recorder Pro, like
    
       many add-in boards, requires a unique I/O address.  Valid I/O addresses
    
       for the Intel Smart Video Recorder and Intel Smart Video Recorder Pro
    
       are 2E4H (factory default setting), 310H, 320H, 340H, 350H, 360H, 3A0H,
    
       and 3B0H.
    
    
    
    

    WHAT IS AN IRQ?

    
       The microprocessor in your computer works on only one task at a time. 
    
       When a device (such as the Intel Smart Video Recorder or Intel Smart
    
       Video Recorder Pro) needs the processor to do some work, it sends an
    
       interrupt request (IRQ) to get the processor's attention.  When the
    
       processor receives an interrupt request, it puts down the task it is
    
       currently working on, executes the new instruction, then goes back to
    
       the original task.
    
    
    
       When two devices are assigned to the same IRQ, one or both of the
    
       devices may not operate reliably.  To ensure reliable operation of your
    
       add-in device, it must be given its own IRQ.
    
    
    
       Valid IRQ settings for the Intel Smart Video Recorder and the Intel
    
       Smart Video Recorder Pro are 9, 10, 11 and 15.
    
    
    
    

    AVOIDING HARDWARE CONFLICTS

    
       Many add-in devices require unique IRQ and I/O address settings. 
    
       Unfortunately, the number of IRQs and I/O addresses available is
    
       limited.
    
    
    
       The best way to avoid a hardware conflict is to know the I/O address
    
       and/or IRQ used by each device in your computer before adding a new
    
       board.  It is a good idea to keep a written record of the IRQ and I/O
    
       address assignments for the devices in your computer.  If you don't have
    
       a written record of the IRQs and I/O addresses currently being used by
    
       your system, you can find out this information by:
    
    
    
         *  examining the I/O address and IRQ switch settings (if applicable)
    
            on the board,
    
    
    
         *  reading the product's Reference Manual or Installation Guide,
    
    
    
         *  contacting your local dealer or the manufacturer of the board and
    
            asking for the valid IRQ and I/O address settings of the board (you
    
            also may want to ask about the default factory settings for the
    
            board),
    
    
    
         *  use the list below as a guideline:
    
    
    
            0 = Timer Click
    
            1 = Keyboard
    
            2 = Cascade to IRQ 9
    
            3 = COM Port 2
    
            4 = COM Port 1
    
            5 = open ( maybe)
    
            6 = Floppy Disk Drive
    
            7 = LPT1 (usable)
    
            8 = Realtime Clock
    
            9 = Redirected IRQ 2
    
            10 = Open
    
            11 = Open
    
            12 = Bus or PS/2 style mouse
    
            13 =  Math Coprocessor
    
            14 =  IDE controller (Hard disk drive)
    
            15 =  Open
    
    
    
       Note: These values are applicable only before add-in cards are
    
       installed. Therefore this table should only be use as a guide.
    
    
    
    

    SYMPTOMS OF AN I/O ADDRESS CONFLICT

    
       Some of the common symptoms of an I/O address conflict (between the
    
       Intel Smart Video Recorder or Intel Smart Video Recorder Pro and another
    
       device in your computer) are:
    
    
    
         *  The Intel Smart Video Recorder or Intel Smart Video Recorder Pro
    
            installation program doesn't recognize the Intel Smart Video
    
            Recorder or Intel Smart Video Recorder Pro as an installed board.
    
    
    
         *  Your video capture application can't initialize the capture device.
    
    
    
         *  The Intel Smart Video Recorder or Intel Smart Video Recorder Pro
    
            doesn't work.
    
    
    
    

    SYMPTOMS OF AN IRQ CONFLICT

    
       Some of the common symptoms of an IRQ conflict (between the Intel Smart
    
       Video Recorder or Intel Smart Video Recorder Pro and another device in
    
       your computer) are:
    
    
    
         *  Frames are dropped during video capture or playback
    
    
    
         *  Video capture or playback is slow.
    
    
    
         *  The system hangs.
    
    
    
         *  The display or data file is corrupt.
    
    
    
         *  Audio is not captured or played back.
    
    
    
         *  The video preview window in the capture program is black.
    
    
    
    

    TROUBLESHOOTING HARDWARE CONFLICTS

    
       If you suspect you have a hardware conflict:
    
    
    
       Identify the device that is sharing an I/O address or IRQ setting with
    
       the Intel Smart Video Recorder.  The devices listed below generally have
    
       I/O address and IRQ settings.  One of these may be the contending
    
       device:
    
    
    
       -network card  modem
    
       -mouse         sound board
    
       -video card    SCSI card
    
       -printer       COM ports
    
    
    
         *  Change the setting of the Intel Smart Video Recorder or Intel Smart
    
            Video Recorder Pro according to the instructions in the
    
            Installation Guide.
    
    
    
            OR
    
    
    
         *  Change the IRQ or I/O address setting of the conflicting device. 
    
            See the Reference Manual or Installation Guide for that device.
    
    

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