Microsoft Visual C++ Support for AMD Processors
Both Microsoft Visual C++.NET and Visual C++ 6.0 provide full support for Advanced Micro Devices processors, including support for 3DNow! Technology, Enhanced 3DNow! and MMX instruction sets. Features such as 3DNow! Compiler Intrinsics & In-Line Assembly, Macro Assembler (MASM), Run-Time Aligned Memory Management, and Debugging and Disassembly, are native to the Visual C++.NET compiler and are available via a Processor Pack for Visual C++6.0. These features will enable easier, straight forward and more productive code optimization for the AMD Athlon and Duron family of processors as well as for the K6-family (including embedded versions).
http://msdn.microsoft.com/vstudio/downloads/ppack/
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