1. Welcome To The WinHEC Device Driver Sessions Sandy Spinrad Device Driver Evangelist Microsoft Corporation

3. Driver Sessions (Today)
Resources
Driver Signing
Testing + Driver Verifier
Device Installation
Plug-n-Play IDs

4. Driver Sessions (Wednesday)
WDM architecture and implementation tips
Display Device Drivers
Driver Quality tools from Compuware / Numega
Filter Drivers
Debugging Drivers
WDM Audio / KS Introduction

5. Driver Sessions (Thursday)
NDIS
Printer Drivers
Toaster Bus
MFP Drivers
WMI
Advanced Audio Drivers
Win 64
WIA
And lots of great content in the technical forums

6. Resources Available To Driver Developers Sandy Spinrad Device Driver Evangelist Bill Stuart Developer Support Microsoft Corporation

7. Resources For Driver Developers
DDK
Driver Verifier
Windows® Hardware Newsletter
DDK/HWDEV Web sites
Conferences
Beta Programs
Hardware Evangelism Group
Test Kits
External resources
DDK Developer Support

8. The Device Driver Kit
Available through MSDN and at
Documentation available online at ddkdocs/win2k
Use the latest Windows 2000 DDK for updated WDM content
Send us your feedback

9. Driver Verifier

10. Microsoft® Windows Hardware Newsletter
Microsoft’s primary vehicle for communicating with the hardware industry
Information pertaining to planners, testers, developers
Sign up for it today!
And read it!

11. HWDev And DDK Web Sites
Archives relevant articles from the Windows Hardware Newsletter
Hosts the DDK downloads
Whitepapers
PC Design Guides
Resources and Yellow Pages

12. Conferences WinHEC Meltdown (July 12th – 14th) Plugfests
Please provide feedback
Meltdown (July 12th – 14th)
Plugfests
Porting events
And a variety of device class specific events throughout the year
Conferences are announced in the Windows Hardware Newsletter

13. Beta Programs Major beta releases are available through MSDN
Limited beta programs are are also available
Watch the hardware newsletter
Participate early and thoroughly

14. Hardware Evangelism Group
Responsible for driving communications between Microsoft and the hardware industry
Technical evangelists assigned to technology areas
Can be contacted directly or through

15. Test Kits Not just for WHQL logo certification
Most HCTs come from tests used by Microsoft device testing teams
Beneficial for internal testing
Many Hardware Compatibility Tests (HCTs) have additional testing tools
Study the HCTs carefully
Use driver verifier
Test on multiprocessor systems

16. External Resources Books Public newsgroups and mailing lists
Third party training seminars
Tools
Consultants
Click on resources/third-party resources

17. Driver Development Support And Hardware Development Tips Bill Stuart Developer Support Microsoft Corporation

18. Microsoft Supports Writing Device Drivers
You don’t need support until you NEED SUPPORT
Support information
Microsoft Resource Guide
Helpful hints
General hardware suggestions

19. Free Support/Resources
Knowledge Base
Select “Windows DDKs” in the “Select a Microsoft Product”
Type in search
The DDK Support teams host a free information page

25. Professional Paid Support
Get to the right place quickly
“Incident” = answer to a question
Or call
Quickly use “incidents”
Web submission
Cheaper than phone!
More accurate - you type it
MSDN customers can go directly to msdn.microsoft.com/subscriptions

26. Find Support In Your Country And Language
Go to “worldwide support”
Pick a country
Driver questions can be escalated to the main Developer Support teams

30. Make Incidents Go Faster
Put keywords in the incident title
YES: “DDK Windows NT® audio driver IRP handling” - very specific
Not specific: “Windows audio C programming” - may take longer
“SR” (service request) number
Like an object handle in programming
Good idea to write it down
Anyone in Microsoft Support can find your incident case if delayed
Upgrade to latest major “build”

31. Topics For Driver/DDK Support Engineers
Building in the DDK environment
Sample adaptations
Understanding the documentation or design guides to write your driver
Setting up the Debugging environment
Debugging tips
Possible workarounds for known bugs

32. Questions For Other Support Engineers
OEM system initial debug
C language questions
WHQL/logo questions - you can find documents and addresses at:

33. Questions For Resources Other Than Microsoft
Actual debugging of your source
Undocumented proprietary DDIs/APIs
Driver development kits or tools not from Microsoft
Third-party real-time extensions to the operating system, except Windows CE
Programming hardware

34. Other Developer Resources
Windows SE debug files
Located on next Windows 98 DDK
Now:
Look for updates
Premier support
Or call
OEM/system builders should start at:
Cutting edge idea?

35. We Support A Variety Of Kits/Operating Systems
Driver Support is part of “Developer Support for Windows”
This covers all manner of kernel mode and user mode programming
Support of writing code for Windows 2000, Windows 98, Windows CE
Support of maintaining past driver code such as Windows 95, Windows NT 4.0, etc.

36. Hardware Development Suggestions Bill Stuart Developer Support Microsoft Corporation

37. Hardware Design Can Help Driver Development
Hardware design aids driver design when it is
Deterministic
Configurable
Latency insensitive
Conforms to device class specifications
Is designed with respect to the driver model
Benefits
Less time to code driver
Faster code execution
More reliable drivers = happier end users

38. Deterministic Hardware Is Great For Drivers
Avoid write-only registers
Separate the controls of different hardware functions
Double check adherence to all device specifications
Plug and Play IDs - different hardware with same ID, multiple IDs in same device…

39. Configurable Hardware Is Great For Drivers
Design device to tolerate power loss
ROM BIOS may not run before the device driver runs
Allow for driver configuration instead of firmware only
Limit hardware directly setting behavior of another device

40. Latency Insensitive Hardware Is Great For Drivers
Windows average data throughput is reliable…
...Single operation may be interrupted
Avoid driver managing A/D conversions
Have buffering of data in hardware

41. Device Class Specifications
Comply with all relevant device class specifications
Hardware behavior might not be changeable in drivers
Support the required power states
Use Microsoft supplied drivers when available
Many IDE, USB, 1394 DV devices will work with Microsoft supplied drivers
If value add features are a requirement, try using filter drivers

42. In Summary Microsoft supports writing device drivers
Microsoft wants you to develop successful drivers
Microsoft Developer Support will help you develop quality device drivers
Questions regarding DDK support?