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following figure shows a sample PnP hardware configuration for a USB joystick.

<img id=”usbjoyhw” src=”http://i.msdn.microsoft.com/dynimg/IC134586.png” alt=”Sample PnP Hardware – USB Joystick” />

Sample PnP Hardware – USB Joystick

In this figure , the USB joystick plugs into a port on a USB hub. The USB hub in this example resides on the USB Host Contrller board and is plugged into the single port on the USB host controller board. The USB host controller plugs into a PCI bus. From a PnP perspective, the USB hub, the USB host controller , and the PCI bus are all bus devices because they each provide prots. The joystick is not a bus device.

WDM driver layers – An Example

Originally Posted On: 2010-05-09 10:30:17

Anshul Makkar, anshul_makkar@justkernel.com

Tags: WDM driver layers