VxD, WDM and Windows 98
Windows 98 based operating systems (Windows 98, Windows 98 Second Edition, and Windows Me) are able to use both WDM and VxD (Virtual device driver) driver standards. Both drivers models can provide unique and different features for the same hardware. However, usually the newer WDM standard provides more features. For example, if a TV tuner card using a VxD driver is able to capture images at a resolution of 384 x 288 pixels, the same TV Tuner card with the WDM driver model may be able to capture at a resolution of 768 x 576 pixels. This can be attributed to the new Broadcast Driver Architecture model which is part of WDM.
Read more about this topic: Windows Driver Model
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