(ref.x86asm.net) X86 Opcode and Instruction Reference
ROAM_REFS: http://ref.x86asm.net/
- X86 Opcode and Instruction Reference
MazeGen, 2017-02-18
Revision: 1.12
This reference is intended to be precise opcode and instruction set reference (including x86-64). Its principal aim is exact definition of instruction parameters and attributes.
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coder32, coder32-abc, geek32, geek32-abc
coder64, coder64-abc, geek64, geek64-abc
coder, coder-abc, geek, geek-abc (these contain both x86-32 and x64 instructions).
In contrast to other references, primary source of this reference is an XML document, which guarantees clear and structured information base and therefore ability to extract many various informations such as a list of instructions from requested groups, etc.
The reference is primarily based on Intel manuals as Intel is the originator of x86 architecture. Additionally, it describes undocumented instructions as well. On appropriate places, it gives a notice if an opcode act differently on AMD architecture. Support for Cyrix, NexGen etc. specific instructions is not scheduled at all.