MS-DOS-Based Multimedia Application Support in Windows NT

 Last reviewed: March 24, 1997
Article ID: Q101706

The information in this article applies to:
  • Microsoft Windows NT operating system version 3.1
  • Microsoft Windows NT Advanced Server version 3.1
  • Microsoft Windows NT Workstation versions 3.5, 3.51, and 4.0
  • Microsoft Windows NT Server versions 3.5, 3.51, and 4.0

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 nt16ap ntdosap
Version : 3.1 3.5 3.51 4.0
Platform : WinNT

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Last reviewed: March 24, 1997
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