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NOP -- No Operation

Opcode  Instruction   Clocks    Description

90      NOP           3         No operation

Description

NOP performs no operation. NOP is a one-byte instruction that takes up space but affects none of the machine context except (E)IP.

NOP is an alias mnemonic for the XCHG (E)AX, (E)AX instruction.

Flags Affected

None

Protected Mode Exceptions

None

Real Address Mode Exceptions

None

Virtual 8086 Mode Exceptions

None


up: Chapter 17 -- 80386 Instruction Set
prev: NEG Two's Complement Negation
next: NOT One's Complement Negation