3-456
INSTRUCTION SET REFERENCE
NOPNo Operation
Description
This instruction performs no operation. This instruction is a one-byte instruction that takes up
space in the instruction stream but does not affect the machine context, except the EIPregister.
The NOP instruction is an alias mnemonic for the XCHG (E)AX, (E)AX instruction.
Flags Affected
None.
Exceptions (All Operating Modes)
None.
Opcode
Instruction
Description
90
NOP
No operation
