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Important Microsoft has released version 1.0a of the Universal Audio Architecture (UAA) High Definition Audio class driver for Microsoft Windows. The newer release supports the High Definition Audio and modem implementations that are known to Microsoft as of August 1, 2004. This is the second version of this driver and supersedes this hotfix. We recommend that you install version 1.0a of this driver. For more information about version 1.0a of this driver and about how to obtain it, click the following article number to view the article in the Microsoft Knowledge Base:
 

888111 Universal Audio Architecture (UAA) High Definition Audio class driver version 1.0a available for Windows XP, Windows Server 2003, and Windows 2000
 

INTRODUCTION

This article describes the first release of the Universal Audio Architecture (UAA) High Definition Audio class driver for Microsoft Windows. This driver is designed to work with the following versions of Windows:

  • Microsoft Windows Server 2003

  • Microsoft Windows XP Service Pack 1 (SP1)

  • Microsoft Windows 2000 Service Pack 4 (SP4)

This release supports the High Definition Audio and modem implementations that are known to Microsoft as of March 19, 2004. The package will not work on High Definition Audio implementations that are disclosed to Microsoft after this date.
 

More Information

A supported feature that modifies the default behavior of the product is available from Microsoft. However, this feature is intended to modify only the behavior that this article describes. Apply this feature only to systems that specifically require it. This feature might receive additional testing. Therefore, if the system is not severely affected by the lack of this feature, we recommend that you wait for the next software update that contains this feature.

If the feature is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the feature.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific feature. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the feature is available. If you do not see your language, it is because the feature is not available for that language.

Prerequisites

To apply this update, you must have one of the following versions of Windows installed on your computer:

  • Microsoft Windows Server 2003

  • Microsoft Windows XP with Service Pack 1 (SP1)

  • Microsoft Windows 2000 with Service Pack 4 (SP4)

Restart requirement

You may have to restart your computer after you apply this update.

File information

The English version of this update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Windows Server 2003

   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   12-Aug-2004  17:45  5.10.0.5011       137,728  Hdaudbus.sys
   12-Aug-2004  17:45  5.10.0.5011       113,664  Hdaudio.sys
   12-Aug-2004  17:45  5.10.0.5011        24,064  Hdaudprop.dll    
   12-Aug-2004  17:45  5.10.0.5011         5,120  Hdaudpropres.dll  
   12-Aug-2004  17:45  5.10.0.5011        61,952  Hdaudpropshortcut.exe  
   17-Mar-2004  23:04  9.0.0.3140        147,456  Mssap.dll        
   15-Mar-2004  20:44  5.2.3790.141      146,432  Portcls.sys 

Windows XP SP1

   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   12-Aug-2004  17:45  5.10.0.5011       137,728  Hdaudbus.sys
   12-Aug-2004  17:45  5.10.0.5011       113,664  Hdaudio.sys
   12-Aug-2004  17:45  5.10.0.5011        24,064  Hdaudprop.dll    
   12-Aug-2004  17:45  5.10.0.5011         5,120  Hdaudpropres.dll  
   12-Aug-2004  17:45  5.10.0.5011        61,952  Hdaudpropshortcut.exe  
   17-Mar-2004  23:05  9.0.0.3140        134,144  Mssap.dll        
   16-Mar-2004  01:41  5.1.2600.1364     135,040  Portcls.sys 

Windows 2000 SP4

   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   12-Aug-2004  17:45  5.10.0.5011       137,728  Hdaudbus.sys
   12-Aug-2004  17:45  5.10.0.5011       113,664  Hdaudio.sys
   12-Aug-2004  17:45  5.10.0.5011        24,064  Hdaudprop.dll    
   12-Aug-2004  17:45  5.10.0.5011         5,120  Hdaudpropres.dll  
   12-Aug-2004  17:45  5.10.0.5011        61,952  Hdaudpropshortcut.exe  
   15-Mar-2004  19:20  5.0.2195.6906     148,368  Portcls.sys
   15-Mar-2004  19:19  5.0.2195.6906      46,032  Sysaudio.sys

More Information

The new UAA describes a class driver architecture for computer audio solutions that are supported in Microsoft Windows operating systems.

An audio device that is UAA compliant can rely completely on the operating system for driver support. Therefore, the hardware vendor does not have to supply a custom driver for the device. Microsoft plans to supply UAA class drivers for the following classes of audio device in Windows Server 2008.

  • USB Audio

  • IEEE 1394 AV/C

  • High Definition Audio

A High Definition Audio device complies with the Intel High Definition Audio specification. A High Definition Audio device connects to the PCI bus or to the PCI Express bus. This High Definition Audio device can reside on an internal audio card, or it can be part of an integrated motherboard chip set. The update that is described in this article supports the spring 2004 Intel initial hardware release of High Definition Audio-compliant solutions.


The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.



The advantages of UAA over the current audio industry solution, AC’97 Audio Codec, include the following.

For users

  • Simpler installation of audio peripherals

  • Increased system stability

  • Easier installation of audio drivers

  • Increased performance

  • Glitch-free audio

  • Increased security for protected content

  • Reduced requirement for vendor-supplied drivers

  • Reduced requirement to upgrade drivers

  • Guaranteed basic audio support for UAA-compliant devices

For OEMs and hardware manufacturers

  • Reduced software development, testing, and support

  • Reduced exposure to product support calls and to product returns

  • Easier phase-out for products at "end of life"

For more information about the UAA in Microsoft Windows, download the Universal Audio Architecture white paper. To do this, visit the following Microsoft Web site:

http://www.microsoft.com/whdc/device/audio/UAA.mspxFor more information about Microsoft software updates, click the following article number to view the article in the Microsoft Knowledge Base:
 

824684 Description of the standard terminology that is used to describe Microsoft software updates

Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.

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