JCXZ-JECXZ
JCXZ/JECXZ - Jump if Register (E)CX is Zero
Causes execution to branch to “label” if register CX is zero.
- Uses unsigned comparaison.
Usage:
JCXZ destination ; JECXZ destination ; 386+ only
| Jump ? | Clocks | Size | ||||
|---|---|---|---|---|---|---|
| Operands | 808x | 286 | 386 | 486 | Bytes | |
| label | Y | 18 | 8+m | 9+m | 8 | 2 |
| N | 6 | 4 | 5 | 5 | ||