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Topic: Windows Driver Model

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	Windows Driver Model - Wikipedia, the free encyclopedia
		WDM drivers are layered in a complex hierarchy and communicate with each other via I/O Request Packets (IRPs).
		WDM exists in the intermediary layer of Windows 2000 kernel-mode drivers and was introduced to increase the functionality and ease of writing drivers for Windows.
		The WDM was mainly designed to be binary and source compatible between Windows 98 and Windows 2000.
	en.wikipedia.org /wiki/Windows_Driver_Model (731 words)

	Windows Display Driver Model - Wikipedia, the free encyclopedia
		Windows Display Driver Model (WDDM) is the new graphic driver model for video cards running under Windows Vista.
		The goal for desktop composition is to enable compelling new visual effects for both the Windows user interface and for applications created by third-party developers, all shown on increasingly affordable, high-density displays.
		To achieve this enhanced desktop experience, a new display driver model has been designed to radically advance functionality, stability, and reliability.
	en.wikipedia.org /wiki/Windows_Display_Driver_Model (246 words)

	NT Drivers - FAQ - WDM
		WDM is primarily an effort by Microsoft to encourage developers to write drivers for Windows NT by providing a common driver model that will work on both Windows NT Version 5 (now renamed "Windows 2000") and Windows 98.
		Therefore, a driver that is to run on any system on which you expect power management to work has to at least use the WDM power management interfaces, though it may not be a "WDM driver" in all other respects.
		Function drivers are analagous to class drivers in the pre-WDM NT SCSI environment: They are layered atop bus drivers to implement the functionality of a class of I/O devices, such as all disks or all keyboards.
	www.cmkrnl.com /faq02.html (2099 words)

	Windows Driver Model Architecture
		Windows 98 and Windows 2000 (formerly Windows NT 5) share a common driver model known as WDM.
		This is based on the original Windows NT driver model, with modifications to support Plug and Play, and is used for most multimedia device types and many other newer device types such as USB and 1394 devices.
		WDM drivers can layer devices so that a higher level device can intercept requests sent to a lower level device or can implement its functionality by using lower-level drivers.
	www.gdcl.co.uk /wdmdetails.htm (330 words)

	WDM 1
		Windows® 98 defined a unified driver model for Windows 98 and Windows 2000 operating systems by standardizing requirements and reducing the amount of code that needed to be written.
		Early in the device driver development process, it is important to devote some thought to how an end user will install your driver and install the hardware it serves.
		Microsoft Windows 2000 and Microsoft Windows 98 use a text file with the file extension INF to control most of the activities associated with installing drivers.
	windows.ittoolbox.com /pub/AN032703B.htm (604 words)

	comp.os.ms-windows.programmer.vxd Frequently Asked Questions (FAQ)
		Miniports allow driver developers to write a single driver using a pre- defined interface that is provided on both Windows NT and Windows= 95/3.x.
		WDM is a= standard API for device driver development under Windows that will be supported across Windows 98 and Windows NT platforms.
		WDM will be based on the Windows NT driver model, with additions to support Plug and Play.= Although the definition has not been released, Microsoft has said that a future release of Windows 95 will support a subset of the Windows NT device= driver services and architecture.
	www.faqs.org /faqs/windows/programming/vxd (4493 words)

	Programming the Microsoft Windows Driver Model
		Note that the Windows 95 documentation for this VxD service call, which states that the count by bytes read or written is returned in ECX, is incorrect.
		An attaching driver coded without knowledge of the internal implementation of IoAttachDevice will be unable to pass this request down to the target driver, leading to an orphaned handle.
		The function driver will lose any state information it may have been trying to preserve across the power cycle, and any application handles that may have been open will be orphaned.
	www.oneysoft.com /wdmerr.htm (6606 words)

	BBPC News \| BuildOrBuy - (WDM) Windows Audio Driver Model Info
		WDM allows a hardware vendor to write one Windows driver for its peripheral device that works with both Win9x, WinNT / Win2000 and WinXP versions." Paraphrased from www.ComputerLanguage.com.
		One of the primary benefits of WDM is the ability to accommodate numerous streams of real-time audio with the high quality possible with digital mixing, processing, and transmission.
		WDM drivers are source-compatible (but not binary-compatible) across the Microsoft Windows 98/Me and Windows 2000 and later Operating Systems." (3/24/2003).
	www.buildorbuy.org /wdm.html (919 words)

	WDM Article
		WDM is an enhanced form of the NT 3.51 and NT 4 kernel-mode device driver model.
		WDM relies on Plug and Play for resource assignment, which was not available in these old drivers.
		A WDM driver has to cope with three different types of device object as shown in figure 1.
	www.phdcc.com /WDMarticle.html (4173 words)

	Amazon.ca: Programming the Microsoft Windows Driver Model: Books (Site not responding. Last check: 2007-10-08)
		A device driver is the code interface that enables a CPU to communicate with a device.
		The Windows Driver Model (WDM) is Microsoft's new common driver model for the Windows 98 and Windows 2000 operating systems.
		If you are creating a production driver that you intend to ship to real customers, the book will also provide you many options for creating a top-notch user experience during the install process.
	www.amazon.ca /exec/obidos/ASIN/0735618038 (1121 words)

	The Basics:Getting Started Writing Windows Drivers
		If you've written drivers for VMS or one of the many UNIX variants, and you're familiar with NT O/S concepts, you might be able to learn what you need to know by reading the documentation provided with the Windows Driver Development Kit (DDK).
		This is also the type of driver that you'd write if, for some strange reason, you can't use the typical mini-port or mini-driver model for a well-known device type.
		WDM is the "forward moving" model by which drivers are built.
	www.osronline.com /article.cfm?article=20#Q25 (3777 words)

	Greg Schechter's Blog : The role of the Windows Display Driver Model in the DWM (Site not responding. Last check: 2007-10-08)
		That's because they vary directly with the number of windows the user has open, and while there are known typical usage patterns, the user certainly isn't and cannot be limited to N open windows.
		WDDM is the new DirectX driver model for Windows Vista and beyond.
		Therefore, as each Window belongs to separate process, developed by different developers, such process was “responsible” for proper rendering of that drawing content and therefore it could be optimized/debugged and etc. independently from other UI component running on the desktop.
	blogs.msdn.com /greg_schechter/archive/2006/04/02/566767.aspx (2889 words)

	Re: linux vs. Windows driver programming
		In Linux every device is a file, (everything is a file) and the driver has a bunch of C file type operations it can handle, like open, read, write, ioctl, poll, seek, with func pointers to them that you fill in a struct when you register the device with the kernel.
		The thing is, your 2nd paragraph, in which you describe the Linux device driver model, also seems to me to be a pretty good description of the Windows NT driver model.
		Knowing that the framework has totally changed and that last years edition of programming the win driver model and the DDK is now an artifact, I'm kind of glad I didn't stick with that when I had picked it up.
	channel9.msdn.com /ShowPost.aspx?PostID=38290 (3694 words)

	Windows Driver Model (Site not responding. Last check: 2007-10-08)
		WDM Drivers are supported in Windows 98, Windows ME and Windows 2000.
		WDM drivers can act as standard devices, supporting read, write and device control operations.
		However, many WDM drivers are for audio or video multimedia devices, and these devices use the WDM Connection and Streaming Architecture ('kernel streaming').
	www.gdcl.co.uk /wdm.htm (172 words)

	kbAlertz: (320275) - Introduction One of the most frequently done tasks in Windows Driver Model (WDM) drivers is ...
		A driver either creates its own IRP and sends it to a lower driver, or the driver forwards the IRPs that it receives from another driver that is attached above.
		If the driver is a top level driver, the IRP can be completed synchronously or asynchronously, depending on the status that is returned by the lower driver.
		In this case, the driver sets a completion routine, forwards the IRP down, and then returns the status of lower driver as is. The purpose of setting the completion routine is to modify the content of the IRP on its way back.
	www.kbalertz.com /kb_320275.aspx (1628 words)

	Informit Safari Tech Books Online - Windows® 2000 Device Driver Book: A Guide for Programmers, Second Edition, The (Site not responding. Last check: 2007-10-08)
		Device drivers for Windows 2000 may be designed for the new Windows Driver Model (WDM) architecture.
		The use of Windows 2000 INF files for "automatic" installation of a plug and play device driver is covered (as well as manual installation for legacy devices).
		I have several years of experience in C/C++ and some experience in windows programming however I am a 'absolute beginner' with Windows device drivers and kernel mode programming and i was able to grasp almost everything the book spoke about with relative ease and with NO confusions.
	safari.informit.com /?XmlId=0130204315 (2165 words)

	Windows Driver Model (WDM) Defined (Site not responding. Last check: 2007-10-08)
		WDM is a driver model that is common to Windows 98 and Windows 2000 that is based on the Windows NT driver model.
		The main difference between WDM and the original model is the addition of Plug and Play support.
		Many multimedia device types including some of the newer device types such as USB and 1394 (Firewire) devices rely on WDM drivers.
	www.leadtools.com /SDK/MULTIMEDIA/Multimedia-WDM.htm (151 words)

	DVD and Windows
		Because Microsoft is providing this driver with its operating systems, hardware vendors have to write only a small amount of interface code in a minidriver to ensure that the specific features in their hardware are supported natively under Windows.
		As a class driver, the WDM Streaming class driver is designed to cover an entire category of hardware devices, with each device supported by a minidriver supplied by the manufacturer.
		This means that developers creating drivers for multifunction devices can build on the Streaming class, working with a single driver model that works for all data types.
	www.hometheaterinfo.com /dvdand.htm (2365 words)

	What is WDM? - A Word Definition From the Webopedia Computer Dictionary
		WDM modulates each of several data streams onto a different part of the light spectrum.
		WDM works by channeling some of the work of the device driver into portions of the code that are integrated into the operating system.
		Kernel-mode drivers that follow WDM rules are called WDM drivers.
	www.webopedia.com /TERM/W/WDM.html (344 words)

	Windows Driver Model Audio Update for Windows 98 Second Edition
		If you are experiencing problems with WDM audio that are not documented below, it is possible that they may be alleviated by the update.
		For example, this tab may allow you to configure the device for 'D2' (low power; the context may be lost by the hardware, depending on the device class).
		For PCM data, the block alignment is the number of bytes used by a single sample, including data for both channels if the data is stereo.
	support.microsoft.com /?kbid=242937 (1177 words)

	Azius Developer Training - DRV301, Advanced Windows Driver Model Drivers
		A driver for a device on a backplane bus is in many ways more complex than one for a protocol-based bus (such as USB, 1394, or SCSI).
		The interaction of bus drivers with the plug and play manager is much more complex than that for functional drivers, so we will discuss the mechanics and internal operation of the plug-and-play manager in detail.
		We examine every plug-and-play IRP in terms of when and why it is sent to a driver, as well as the driver’s options on the processing the IRP.
	www.azius.com /drv301.htm (534 words)

	kbAlertz: When you install a Windows Driver Model (WDM) audio driver on a Windows 98 Second Edition- and Windows ...
		When you install a Windows Driver Model (WDM) audio driver on a Windows 98 Second Edition- and Windows Millennium Edition (Me)-based computer, the Volume icon may be missing from the taskbar.
		This is a known problem with WDM audio drivers that are installed on Windows 98 Second Edition- and Windows Me-based computers.
		When you install a WDM audio device on a Windows 98 Second Edition- or Windows Me-based computer, a New Hardware Found dialog box is displayed and the required driver files are installed.
	www.kbalertz.com /redir.aspx?kbNumber=Q245262 (472 words)

	Amazon.com: Programming the Microsoft Windows Driver Model, Second Edition: Books: Walter Oney (Site not responding. Last check: 2007-10-08)
		Clarifies real-world driver programming issues for Microsoft Windows XP, Windows 2000, and Windows 98 through extensive practical examples, illustrations, advice, and code samples.
		Windows NT/2000 Native API Reference by Gary Nebbett
		Having said all that, you probably need this book if you are writing a WDM driver.
	www.amazon.com /exec/obidos/tg/detail/-/0735618038?v=glance (1784 words)

	Writing Windows WDM Device Drivers book
		A source code disk is provided with the book with several full example device drivers.
		It includes the DebugPrint debugging tool which lets you insert trace printf statements in driver code that can be seen in the DebugPrint Monitor application on the same computer.
		The book also includes the PHDIo generic device driver that can be used to access simple ISA I/O ports and perform interrupt- driven reads and writes.
	www.phdcc.com /wdmbook (194 words)

	Programming the Microsoft Windows Driver Model (0-7356-0588-2)
		Microsoft's new driver model for Windows 98 and Windows 2000 supports Plug and Play, provides power management capabilities, and expands on the driver/minidriver approach.
		Written by device-driver expert Walter Oney in cooperation with the Windows DDK team, this book provides extensive practical examples, illustrations, advice, and line-by-line analysis of code samples to clarify real-world driver-programming issues.
		An introduction to the Windows Driver Model architecture
	www.stolin-software.com /PressPages/0-7356-0588-2.html (155 words)

	Bookpool: Programming the Microsoft Windows Driver Model, 2nd Edition
		The Microsoft® Windows® driver model (WDM) supports Plug and Play, provides power management capabilities, and expands on the driver/minidriver approach.
		Written by long-time device-driver expert Walter Oney in cooperation with the Windows kernel team, this book provides extensive practical examples, illustrations, advice, and line-by-line analysis of code samples to clarify real-world driver-programming issues.
		And it’s been updated with the latest details about the driver technologies in Windows XP and Windows 2000, plus more information about how to debug drivers.
	www.bookpool.com /sm/0735618038 (417 words)

	Programming the Microsoft Windows Driver Model (Site not responding. Last check: 2007-10-08)
		This new book, exclusively devoted to Microsoft's new common driver model for Windows 2000 and Windows 98, is coming this October from Microsoft Press.
		The information in this book already forms the basis for the Walter Oney Drivers for Windows 2000 seminar series.
		How to write drivers that are source- and binary-compatible between Windows 2000 and Windows 98.
	www.oneysoft.com /wdmbook.htm (301 words)

	What is Windows Driver Model? - A Word Definition From the Webopedia Computer Dictionary
		OutlookSoft: Business Modeling Software - Provides business performance management (BPM) software for financial and operational planning, modeling, forecasting, budgeting and reporting.
		Siemens Industrial Automation: Spice Modeling - PROFINET offers decentralized IO, peer-to-peer communications, data visibility, machine safety, and motion control on one Industrial Ethernet network.
		Microsemi Corporation: Gate Drivers - Specializes in system-engineered integrated circuits and high reliability discrete devices such as gate driver transistors.
	www.webopedia.com /TERM/W/Windows_Driver_Model.html (203 words)

	Amazon.ca: Programming The Microsoft Windows Driver Model : The Official Guide To The Microsoft Windows Driver Model: ... (Site not responding. Last check: 2007-10-08)
		Buy Programming The Microsoft Windows Driver Model : T...
		The author's command of the details of the new Windows Driver Model (WDM) standard is what makes this book such a clear success.
		The process of writing device drivers certainly has changed from the early days of DOS.
	www.amazon.ca /exec/obidos/ASIN/0735605882 (1273 words)

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