IA-32體系結(jié)構(gòu)包括了x86_64嗎?

weichuang02

到底包不包括?

flyd1005

IA-32 (Intel Architecture, 32-bit), also known as x86-32, i386[α] or x86,[α] is the CISC[1] instruction-set architecture of Intel's most commercially successful microprocessors, and was first implemented in the Intel 80386 as a 32-bit extension of x86 architecture. This architecture has defined the instruction set for the family of microprocessors currently installed in most personal computers in the world, although it is now being supplanted by x86-64.

So IA-32 == x86-32.

NalaGinrut

x86-64 is an extension of the IA-32 32-bit version of the x86 instruction set.
也就是所謂的 IA-32e

IA-64根本就不是x86指令集，是全新的RISC的指令集，所以沾到x86字樣就肯定不是IA-64
x86-64就是在原有x86-32基礎(chǔ)上加上了64位的支持而已，所以它其實(shí)是IA-32，但是一般不這么說(shuō)，因?yàn)樘�混亂了，但實(shí)質(zhì)就是這么一回事。

bensenq

X86_64其實(shí)應(yīng)該叫AMD64...