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How to Identify the Windows Version in ACPI by Using _OSI
Updated: July 13, 2012
File name: WinACPI_OSI.docx
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This paper describes how to use the _OSI method in Advanced Configuration and Power Interface (ACPI) Source Language (ASL) to identify the host operating system. By using this method, ASL writers can create firmware that supports future operating systems versions and enables the operating system to change behavior based on the requested interface levels.
This information applies to the following operating systems:
Windows Server 2012
Windows 8
Windows Server 2008 R2
Windows 7
Windows Server 2008
Windows Vista
Windows Server 2003
Windows XP
Included in this white paper:
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The _OSI Method
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_OSI Defined
