DOCUMENT:Q101706  22-JUL-1993  [W_NT]
TITLE   :INF: MS-DOS-Based Multimedia Application Support in Windows NT
PRODUCT :Windows NT
PROD/VER:3.10
OPER/SYS:WINDOWS
KEYWORDS:

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The information in this article applies to:

 - Microsoft Windows NT operating system, version 3.1
 - Microsoft Windows NT Advanced Server, version 3.1
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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 reference words: 3.10
KBCategory:
KBSubcategory: MDOS 16AP

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Copyright Microsoft Corporation 1993.