X86

Type of instruction set architecture
trends
MayJuneJulyAugustSeptemberOctober0500
inception
1978
alias
Intel x86
80x86
X86
X86 Architecture
media
Stack Exchange tag
Commons category
X86 Microprocessors
Wikibooks URL
Wikipedia creation date
10/31/2001
Wikipedia incoming links count
Wikipedia opening text
x86 is a family of instruction set architectures initially developed by Intel based on the Intel 8086 microprocessor and its 8088 variant. The 8086 was introduced in 1978 as a fully 16-bit extension of Intel's 8-bit 8080 microprocessor, with memory segmentation as a solution for addressing more memory than can be covered by a plain 16-bit address. The term "x86" came into being because the names of several successors to Intel's 8086 processor end in "86", including the 80186, 80286, 80386 and 80486 processors. Many additions and extensions have been added to the x86 instruction set over the years, almost consistently with full backward compatibility. The architecture has been implemented in processors from Intel, Cyrix, AMD, VIA Technologies and many other companies; there are also open implementations, such as the Zet SoC platform (currently inactive). Nevertheless, of those, only Intel, AMD, VIA Technologies and DM&P Electronics hold x86 architectural licenses, and from these, only the first two are actively producing modern 64-bit designs. The term is not synonymous with IBM PC compatibility, as this implies a multitude of other computer hardware; embedded systems, as well as general-purpose computers, used x86 chips before the PC-compatible market started, some of them before the IBM PC (1981) itself. As of 2018, the majority of personal computers and laptops sold are based on the x86 architecture, while other categories—especially high-volume[clarification needed] mobile categories such as smartphones or tablets—are dominated by ARM; at the high end, x86 continues to dominate compute-intensive workstation and cloud computing segments.
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80x86
Intel 80x86
8x86
80786
X86-16
Intel 80786
Intel x86
IA 32
X-86
X86 pro
X86-based CPU
X86-based system
X86 based
X86 clone
X86 compatible
Intel-based CPU
Intel-based cpu
Intel 16
Intel compatible
Intel-compatible
Intel clone
X86 architecture
Accumulator eXtended
AL register
AH register
AX register
BX register
CX register
DX register
BH register
BL register
CL register
CH register
DH register
DL register
Base pointer
DS register
ES register
SS register
DI register
SI register
FS register
GS register
X86 registers
BP register
EAX register
EBX register
ECX register
EDX register
ESP register
EBP register
ESI register
EDI register
EIP register
RIP register
RFLAGS register
RAX register
RBX register
RCX register
RDX register
RSI register
RDI register
RBP register
RSP register
GDTR register
LDTR register
IDTR register
TR register
IP register
Source index
Destination index
IAPX 86 series
X86 microprocessor
Wikipedia URL
Bibliothèque nationale de France ID
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external links