Convert Double to Quad
|
86/88 |
N |
186 |
N |
286 |
N |
386 |
Y |
486 |
Y |
CDQ |
|
Ovfl |
N |
Dir |
N |
Int |
N |
Trap |
N |
Sign |
N |
Zero |
N |
Aux |
N |
Prty |
N |
Carry |
N |
CDQ extends the sign bit of the EAX register into the EDX register. This
instruction extends a signed double word value into the equivalent signed
quad word value.
------------------------------------ Timing ----------------------------------
OpCode Instruction 386 286 86
99 CDQ 2
------------------------------------ Logic -----------------------------------
if (EAX < 80000000h) then
EDX = 0
else
EDX = FFh
See Also CBW CWD CWDE DIV IDIV |