JCXZ performs a short jump (with maximum range 128 bytes) if and
only if the contents of the CX register is 0. JECXZ does the
same thing, but with ECX.
jecxz
386 and laterJump if ECX register is 0
jecxz imm8 {near|short}Forms
Every form of jecxz the assembler accepts.
| Form | Since | Notes |
|---|---|---|
| jecxz imm8 {near|short} | 386 |