Книга: Writing Windows WDM Device Drivers

Driver Targets

Driver Targets

Drivers can be built in free or checked versions, and in NT and Windows 2000 for different processors.

The free target is the final release retail version, optimized as necessary with all debug symbols removed.

The checked target is an unoptimised debug version that includes symbols to make debugging easier.

NT and Windows 2000 come in free and checked versions. If you use the Microsoft WinDbg debugger then you need two computers running NT or W2000. The development PC should be the faster computer running the free version of Windows. The driver should be running under test on the other target PC that is running the checked build. The fact that there are fewer resources available on the target system is good as it makes it easier to check that your driver will work in stressful situations.

Windows 2000 also runs on the Dec Alpha platform, so you can also build for the Alpha platform free and checked targets. This book only discusses the x86 platform.

In this book, the emphasis is on writing drivers that work in both Windows 98 and Windows 2000. However, a few features are present in only one operating system. The following preprocessor directives can be used to determine whether you are using the W2000 DDK or the W98 DDK. If you have separate versions of your driver, the installation files will have to be slightly different. As Chapter 11 shows, a single installation INF file can include separate instructions for W2000 and W98.

#if _WIN32_WINNT>=0x0500
 // W2000+ code
#else
// W98 code
#endif

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