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Yasm logo
Developer(s) Peter Johnson, Michael Urman et al.
Stable release
1.3.0 / August 10, 2014; 4 years ago (2014-08-10)
Repository Edit this at Wikidata
Operating system DOS, Microsoft Windows, Unix-like
Type Assembler
License BSD
Website yasm.tortall.net

In computing, Yasm is an assembler and disassembler for the Intel x86 architecture. It can be used to write 16-bit, 32-bit (IA-32) and 64-bit (x86-64) programs. Yasm is a full rewrite of Netwide Assembler (NASM). Yasm can generally be used interchangeably with NASM and supports the x86 and x86-64 architectures. It is licensed under a revision of the BSD licenses. As of 2011 it was developed by Peter Johnson and Michael Urman.

Comparison to NASM[edit]


  • It can assemble input with both Intel and AT&T (as) syntax;
  • Library interface for compiler developers.


See also[edit]

External links[edit]