Easiest/Best Way to Learn the x86 Instruction Set?

Posted by mudge on Stack Overflow See other posts from Stack Overflow or by mudge
Published on 2010-03-18T14:54:03Z Indexed on 2010/03/18 15:01 UTC
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I would like to learn the x86 Instruction Set Architecture. I don't meaning learning an assembly for x86. I want to understand the machine code baby.

The reason is that I would like to write an assembler for x86. Then I want to write a compiler that compiles to that assembly.

I know that there are the Intel manuals and AMD manuals that cover the x86 instruction set. But those are very large and dense.

I'm wondering if there is a more approachable (possibly tutorial) approach to learning the x86 instruction set architecture.

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