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The i386 version as supports both the original Intel 386
architecture in both 16 and 32-bit mode as well as AMD x86-64 architecture
extending the Intel architecture to 64-bits.
| • i386-Options | Options | |
| • i386-Directives | X86 specific directives | |
| • i386-Syntax | Syntactical considerations | |
| • i386-Mnemonics | Instruction Naming | |
| • i386-Regs | Register Naming | |
| • i386-Prefixes | Instruction Prefixes | |
| • i386-Memory | Memory References | |
| • i386-Jumps | Handling of Jump Instructions | |
| • i386-Float | Floating Point | |
| • i386-SIMD | Intel’s MMX and AMD’s 3DNow! SIMD Operations | |
| • i386-LWP | AMD’s Lightweight Profiling Instructions | |
| • i386-BMI | Bit Manipulation Instruction | |
| • i386-TBM | AMD’s Trailing Bit Manipulation Instructions | |
| • i386-16bit | Writing 16-bit Code | |
| • i386-Arch | Specifying an x86 CPU architecture | |
| • i386-ISA | AMD64 ISA vs. Intel64 ISA | |
| • i386-Bugs | AT&T Syntax bugs | |
| • i386-Notes | Notes |