Opcode |
Instruction |
Description |
|---|---|---|
|
90 |
NOP |
No operation |
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 EIP register.
The NOP instruction is an alias mnemonic for the XCHG (E)AX, (E)AX instruction.
None.
None.
For details, see Volume 2A and Volume 2B of the Intel(R) 64 and IA-32 Intel Architecture Software Developer's Manual. For the latest updates on the instruction set information, go to the web site.