| Code | Mnemonic | Description |
|---|---|---|
| F9 | STC | Set Carry Flag |
Sets the CF flag in the EFLAGS register.
| Operands | Bytes | Clocks | |
|---|---|---|---|
| 1 | 2 | NP | |
| ID | unaffected | DF | unaffected |
|---|---|---|---|
| VIP | unaffected | IF | unaffected |
| VIF | unaffected | TF | unaffected |
| AC | unaffected | SF | unaffected |
| VM | unaffected | ZF | unaffected |
| RF | unaffected | AF | unaffected |
| NT | unaffected | PF | unaffected |
| IOPL | unaffected | CF | sets |
| OF | unaffected |