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The Netwide Assembler, NASM, is an 80x86 and x86-64 assembler designed
for portability and modularity. It supports a range of object file formats,
including Linux and 
The Netwide Assembler grew out of an idea on
a86 gas gcc as86 MASM TASM So here, for your coding pleasure, is NASM. At present it's still in prototype stage - we don't promise that it can outperform any of these assemblers. But please, please send us bug reports, fixes, helpful information, and anything else you can get your hands on (and thanks to the many people who've done this already! You all know who you are), and we'll improve it out of all recognition. Again.
Please see the file 
The current version of NASM (since about 0.98.08) is maintained by a
team of developers, accessible through the
NASM has a WWW page at
The original authors are e-mailable as
New releases of NASM are uploaded to the official sites
Announcements are posted to
If you want information about NASM beta releases, and the current
development status, please subscribe to the
Once you've obtained the appropriate archive for NASM,
The archive will contain a set of executable files: the NASM executable
file 
The only file NASM needs to run is its own executable, so copy
That's it - NASM is installed. You don't need the nasm directory to be
present to run NASM (unless you've added it to your
If you've downloaded the DOS source archive,
Note that a number of files are generated from other files by Perl scripts. Although the NASM source distribution includes these generated files, you will need to rebuild them (and hence, will need a Perl interpreter) if you change insns.dat, standard.mac or the documentation. It is possible future source distributions may not include these files at all. Ports of Perl for a variety of platforms, including DOS and Windows, are available from www.cpan.org.
Once you've obtained the Unix source archive for NASM,
NASM is an auto-configuring package: once you've unpacked it,
Once NASM has auto-configured, you can type
NASM also comes with a set of utilities for handling the