Clear Direction Flag
|
86/88 |
Y |
186 |
Y |
286 |
Y |
386 |
Y |
486 |
Y |
CLD |
|
Ovfl |
N |
Dir |
0 |
Int |
N |
Trap |
N |
Sign |
N |
Zero |
N |
Aux |
N |
Prty |
N |
Carry |
N |
CLD zeros the Direction Flag. No other flags are affected. Clearing
the direction flag causes string operations to increment SI and DI.
Note: String instructions increment SI and DI when the
direction flag is clear.
------------------------------------ Timing ----------------------------------
OpCode Instruction 386 286 86
FC CLD 2 2 2
------------------------------------ Logic -----------------------------------
DF = 0
See Also STD CLC STC CMC STI CLI CMPS Flags |