Microsoft KB Archive/101706

= MS-DOS-Based Multimedia Application Support in Windows NT =

Article ID: 101706

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Advanced Server 3.1
 * Microsoft Windows NT Workstation 3.1
 * Microsoft Windows NT Advanced Server 3.1
 * Microsoft Windows NT Workstation 3.5
 * Microsoft Windows NT Workstation 3.51
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 3.5
 * Microsoft Windows NT Server 3.51
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q101706



Typically, an MS-DOS-based multimedia application writes directly to the I/O ports of an installed sound adapter to perform audio functions. To support system security in Windows NT, an application cannot write directly to the hardware ports, it must write to a VDD (virtual device driver) that simulates the sound adapter. Currently, Windows NT does not include any VDDs for sound adapters; multimedia applications that perform direct I/O are not supported.

Microsoft will post new information here in the Microsoft Knowledge Base as these modules are available to install in Windows NT.

Additional query words: prodnt 0

Keywords: kb3rdparty KB101706

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