| Opcode | Instruction | Op/En | 64-bit Mode | Compat/Leg Mode | Description |
|---|---|---|---|---|---|
| F8 | CLC | NP | Valid | Valid | Clear CF flag. |
| Op/En | Operand 1 | Operand 2 | Operand 3 | Operand 4 |
| NP | NA | NA | NA | NA |
Clears the CF flag in the EFLAGS register. Operation is the same in all modes.
CF ← 0;
The CF flag is set to 0. The OF, ZF, SF, AF, and PF flags are unaffected.
#UD
If the LOCK prefix is used.