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NASM Review

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Review of NASM powered by the Slant community.

Netwide Assembler (NASM) is an open source assembler / disassembler for the Intel x86 architecture and can write 16-bit, 32-bit (IA-32) and 64-bit (x86-64) programs. NASM is one of the most popular assemblers for Linux.
See Tutorialspoint - Assembly tutorial.

SpecsUpdate

PlatformsWindows, DOS, Linux, Unix, OS/2

Ranked in these QuestionsQuestion Ranking

What are the best x86/x64 assemblers?

Pros

Pro
Clean syntax

Pro
Powerful macros

It can do everything GAS+CPP can do combined, and much more.

Pro
Excellent for toy DOS code

NASM can easily create .COM executables and is even supported on DOS.

Cons

Con
Poor diagnostics

NASM typically won't tell you the problem, just generic parser errors like "mismatched operand type" or "expected instruction".

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