| Code | Mnemonic | Description |
|---|---|---|
| 0F 09 | WBINVD | Write back and flush Internal caches; initiate writing-back and flushing of external caches. |
| Operands | Bytes | Clocks | |
|---|---|---|---|
| 2 | 2000+ | 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 | unaffected |
| OF | unaffected |