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Windows Driver Model
In computing, the Windows Driver Model WDM– also known at one point as the Win32 Driver Model– is a framework for device drivers that was introduced with Windows 98 and Windows 2000 to replace VxD, which was used on older versions of Windows such as Windows 95 and Windows 31, as well as the Windows NT Driver Model
Contents
1 Overview
11 Device function drivers
12 Bus drivers
13 Filter drivers
2 VxD, WDM and Windows 98
3 Criticism
4 See also
5 References
6 External links
Overview
WDM drivers are layered in a complex hierarchy and communicate with each other via I/O request packets IRPs The Microsoft Windows Driver Model unified driver models for the Windows 98 and Windows 2000 product lines by standardizing requirements and reducing the amount of code that needed to be written WDM drivers will not run on operating systems earlier than Windows 98 or Windows 2000, such as Windows 95, Windows NT 40 and Windows 31 By conforming to WDM, drivers can be binary compatible and source-compatible across Windows 98, Windows 98 Second Edition, Windows Me, Windows 2000, Winwindows driver model, windows driver model (wdm), programming the microsoft windows driver model, what is windows driver model, microsoft windows driver model, windows driver model programming Windows Driver Model