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80386 Programmer's Reference Manual -- Opcode NOP

NOP -- No Operation

OpcodeInstructionClocks DescriptionExample
90nop 3 No operationnop

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

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