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Difference between revisions of "x86"

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'''x86''' is a family of [[little-endian]] [[instruction set architectures]] and [[instruction set architectures extension|extensions]]. As its namesake indicates, the x86 ISA offers [[binary compatibility]] all the way from the original {{intel|8086}} to modern [[microarchitecture]]s as well as [[source code compatibility]] since the {{intel|8080}}. The architecture is widely used in the [[desktop]] and [[server]] markets by a number of [[semiconductor companies|companies]] including [[Intel]], [[AMD]], [[VIA]], [[DM&P]], and [[RDC Semiconductors|RDC]].
 
'''x86''' is a family of [[little-endian]] [[instruction set architectures]] and [[instruction set architectures extension|extensions]]. As its namesake indicates, the x86 ISA offers [[binary compatibility]] all the way from the original {{intel|8086}} to modern [[microarchitecture]]s as well as [[source code compatibility]] since the {{intel|8080}}. The architecture is widely used in the [[desktop]] and [[server]] markets by a number of [[semiconductor companies|companies]] including [[Intel]], [[AMD]], [[VIA]], [[DM&P]], and [[RDC Semiconductors|RDC]].
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Generally speaking, the term 'x86' encompasses the original {{x86|x86-16}}, {{x86|x86-32}} (IA-32), {{x86|x86-64}} (AMD64), and the various extensions such as {{x86|MMX}}, {{x86|3DNOW!}}, and {{x86|SSE}}.
  
 
== History ==
 
== History ==
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== Instruction Set ==
 
== Instruction Set ==
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=== Syntaxes ===
 
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== Syntaxes ==
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== Implementations ==
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== See also ==
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* [[ARM]]
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Revision as of 18:10, 25 October 2016

x86 ISA
Developer Intel
AMD
Dev model Proprietary
Design Von Neumann
Data word size 8 bit
1 octets
2 nibbles
, 16 bit
2 octets
4 nibbles
, 32 bit
4 octets
8 nibbles
, 64 bit
8 octets
16 nibbles
Instruction word size Variable
"Variable" is not a number.
Introduction 1978
Format Register-Memory
Endianness Little-endian
ISAsBy CompanyBy InstBy Data

x86 is a family of little-endian instruction set architectures and extensions. As its namesake indicates, the x86 ISA offers binary compatibility all the way from the original 8086 to modern microarchitectures as well as source code compatibility since the 8080. The architecture is widely used in the desktop and server markets by a number of companies including Intel, AMD, VIA, DM&P, and RDC.

Generally speaking, the term 'x86' encompasses the original x86-16, x86-32 (IA-32), x86-64 (AMD64), and the various extensions such as MMX, 3DNOW!, and SSE.

History

Main article: History of x86
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Overview

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Registers

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Operation Modes

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Instruction Set

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Syntaxes

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Interrupts

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Extensions

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Implementations

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See also


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Facts about "x86"
designerIntel + and AMD +
first launched1978 +
full page namex86 +
instance ofinstruction set architecture +
namex86 +
word size8 bit (1 octets, 2 nibbles) +, 16 bit (2 octets, 4 nibbles) +, 32 bit (4 octets, 8 nibbles) + and 64 bit (8 octets, 16 nibbles) +