Loop Control with CX Counter
|
86/88 |
Y |
186 |
Y |
286 |
Y |
386 |
Y |
486 |
Y |
LOOP short_label |
|
Ovfl |
N |
Dir |
N |
Int |
N |
Trap |
N |
Sign |
N |
Zero |
N |
Aux |
N |
Prty |
N |
Carry |
N |
LOOP decrements CX by 1, then transfers control to short-label if CX
is not 0. Short-label must be within -128 to +127 bytes of the next
instruction.
------------------------------------ Timing ----------------------------------
OpCode Instruction 386 286 86
E2 cb LOOP rel8 11+m 8,4 17,5
------------------------------------ Logic -----------------------------------
CX = CX - 1
if (CX <> 0) then
JMP short_label
See Also LOOPE LOOPNE JCXZ JECXZ |