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Qu'est-ce (qui) est op code - définition

PART OF A MACHINE INSTRUCTION

Op code; Instruction code; Instruction code (programming); Opcode (programming); Opcodes; Op-code; Operation code; Opstring; Software instruction set; Instruction syllable; Operation string; Instruction opcode; Instruction word; Instruction byte; OpCode; Opcode sequence; Instruction parcel; Processor opcode; Instruction machine code; Instruction packet; Instruction token; Operation code (computing); Program string; Opcode string

op code

instruction mnemonic

operation code

<programming> (Or "op code") The part or parts of a {machine language} instruction which determines what kind of action the computer should take, e.g. add, jump, load, store. In any particular instruction set certain fixed bit positions within the instruction word contain the op code, others give parameters such as the addresses or registers involved. For example, in a 32-bit instruction the most significant eight bits might be the op code giving 256 possible operations. For some instruction sets, certain values in the fixed bit positions may select a group of operations and the exact operation may depend on other bits within instruction word or subsequent words. When programming in assembly language, the op code is represented by a readable name called an {instruction mnemonic}. (1997-02-14)

Opcode

In computing, an opcode (abbreviated from operation code, also known as instruction machine code, instruction code, instruction syllable, instruction parcel or opstring) is the portion of a machine language instruction that specifies the operation to be performed. Beside the opcode itself, most instructions also specify the data they will process, in the form of operands.

https://en.wikipedia.org/wiki/Opcode

Wikipédia

Opcode

In computing, an opcode (abbreviated from operation code, also known as instruction machine code, instruction code, instruction syllable, instruction parcel or opstring) is the portion of a machine language instruction that specifies the operation to be performed. Beside the opcode itself, most instructions also specify the data they will process, in the form of operands. In addition to opcodes used in the instruction set architectures of various CPUs, which are hardware devices, they can also be used in abstract computing machines as part of their byte code specifications.

https://en.wikipedia.org/wiki/Opcode