Windows Programming/Obtaining MASM
Many people claim that Microsoft has discontinued the use of MASM, but this is not the case. MASM is still maintained by Microsoft for use in house, and is updated on a needs basis. This means that MASM is only updated when presented with a specific need, such as the migration to 64 bits, or the migration to Vista. MASM comes as part of the standard DDK distribution (on the CD), and can also be found for download on the Internet, or can be ordered separately by contacting Microsoft sales and service at 1-800-426-9400.