The world's leading source for technical x86 processor information. regs general purpose registers FLAGS register segment registers table registers control registers debug registers FP/MMX/3DNow! | XMM/YMM model specific registers   code opcode encoding 1 byte opcodes 2 byte opcodes 3 byte opcodes opcode groups | bits FP | 3DNow! | SSE5A | XOP mod R/M byte and SIB byte 16-bit mod R/M byte   data datatypes stack frame selectors descriptors descriptor tables task state segment paging structures system management mode   misc condition codes exceptions | interrupts legacy stuff | APIC | VX coherency processor mode initial state canonical addresses CPUID       restrict search to www.sandpile.org       © 1996-2012 by Christian Ludloff. All rights reserved. Use at your own risk.