x86 Resources

• Sandpile.org (The World's Leading Source For Pure Technical x86 Processor Information)
• AMD64 Application Binary Interface [PDF] (great reference)
• Summary of Core x86-64 Instructions and AMD64 ABI [PDF] (courtesy of U. Chicago)
• AMD64 Calling Conventions for Windows
• AMD x86 Documentation (easier to read)
• Intel x86 Documentation (gold standard)

Additional Resources For Windows Users

• MASM Samples
• Microsoft Macro Assembler Reference

Computing Resources

• Setting-Up A Virtual Machine with 64-bit Ubuntu