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Intel Assembly 80x86 CodeTable by Roger Jegerlehner [.pdf]
Intel Assembly 80x86 CodeTable by Roger Jegerlehner [backup]
Win32 Assembly Cheat Sheet by Peter Kankowski [.png]
Win32 Assembly Cheat Sheet by Peter Kankowski [backup]
gcc x86 Assembly Quick Reference ("Cheat Sheet") by Peter O. Lawlor
Intel x86-64 Architecture by Michael Stumpfl [pdf]