MS-DOS-Based Multimedia Application Support in Windows NT

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, 4.0
Microsoft Windows NT Server versions 3.5, 3.51, 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
Issue type :