|
| |
Bit Test
|
86/88 |
N |
186 |
N |
286 |
N |
386 |
Y |
486 |
Y |
BT destination, source |
|
Ovfl |
N |
Dir |
N |
Int |
N |
Trap |
N |
Sign |
N |
Zero |
N |
Aux |
N |
Prty |
N |
Carry |
Y |
The destination bit indexed by the source value is copied into the
Carry Flag.
------------------------------------ Timing ----------------------------------
OpCode Instruction 386 286 86
0F A3 BT r/m16, r16 3/12
0F A3 BT r/m32, r32 3/12
0F BA/4 ib BT r/m16, imm8 3/6
0F BA/4 ib BT r/m32, imm8 3/6
------------------------------------ Logic -----------------------------------
CF = bit (source) of destination
See Also BSF BSR BTC BTR BTS SETxx Flags |