English

Noun

nop ‎(plural nops)

1. (programming) A no-op; a CPU instruction that does nothing.
   • 1999, Dominic Sweetman, See MIPS Run

     The MIPS instruction set is rich in nops, since any instruction with zero as a destination is guaranteed to do nothing.

   • 2004, Patterson et al, Computer Organization and Design: The Hardware/Software Interface

     Notice that in computing CPI or IPC, we do not count any nops executed as useful instructions.

Verb

nop ‎(third-person singular simple present nops, present participle nopping, simple past and past participle nopped)

1. (programming) To replace machine code with nop instructions when modifying software.
   • 1992, The Cyborg, The Cracking Manual

     For example, if there is a CALL 3140 and we want to skip this call, we can NOP it out.

   • 2012, Michael W. Berry, ‎Kyle A. Gallivan, ‎Efstratios Gallopoulos, High-Performance Scientific Computing: Algorithms and Applications

     Worse, some patching can result in codes which cannot be executed: for example nopping the load which provides the value for the denominator of a division can result in a division by zero.

Anagrams

• NPO, 'pon, pon

Etymology 2

Interjection

nop

1. (informal, rare) Alternative form of nope

Italian

Interjection

nop

1. (informal, neologism) nope

Portuguese

Pronunciation

• (Brazil) IPA^(key): /ˈnɔp/

Interjection

nop

1. (informal, neologism) nope

Seri

Noun

nop (plural nopxam)

1. bobcat, Lynx rufus

Spanish

Pronunciation

• IPA^(key): /nop/

Interjection

nop

1. (informal, neologism) nope