Microsoft Macro Assembler
Software
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The Microsoft Macro Assembler is an x86 assembler that uses the Intel syntax for MS-DOS and Microsoft Windows. Beginning with MASM 8.0, there are two versions of the assembler: One for 16-bit & 32-bit assembly sources, and another for 64-bit... Wikipedia
Initial release date: 1981
Developer(s): Microsoft
License: Commercial proprietary software
Operating system: Microsoft Windows and MS-DOS
Stable release: 14.16.27023.1 / March 7, 2017; 7 years ago