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x86
x86 ISA | |
Developer | Intel AMD |
Dev model | Proprietary |
Design | Von Neumann |
Data word size | 8 bit 1 octets , 16 bit2 nibbles 2 octets , 32 bit4 nibbles 4 octets , 64 bit8 nibbles 8 octets
16 nibbles |
Instruction word size | Variable "Variable" is not a number.
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Introduction | 1978 |
Format | Register-Memory |
Endianness | Little-endian |
ISAs • By Company • By Inst • By 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.
Contents
History
- Main articles: x86/history and 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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Interrupts
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Extensions
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Syntaxes
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Facts about "x86"
designer | Intel + and AMD + |
first launched | 1978 + |
full page name | x86 + |
instance of | instruction set architecture + |
name | x86 + |
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) +, 128 bit (16 octets, 32 nibbles) +, 256 bit (32 octets, 64 nibbles) + and 512 bit (64 octets, 128 nibbles) + |