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Wiktionary The Free Dictionary

opcode

From Wiktionary, the free dictionary

English

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Etymology

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From op +‎ code (in sense of operation ).

Noun

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opcode (plural opcodes )

  1. (computing ) A mnemonic used to refer to a microprocessor instruction in assembly language.
    • 1992, Michael A. Miller, The 68000 Microprocessor Family: Architecture, Programming, and Applications, page 47:
      When the microprocessor decodes the JSR opcode, it stores the operand into the TEMP register and pushes the current contents of the PC (00ドル 0128) onto the stack.
    • 2010, Andrew Troelsen, Pro C# 2010 and the .NET 4 Platform, page 655:
      In the tradition of other low-level languages, many CIL opcodes tend to be cryptic and completely unpronounceable by us mere humans.

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