CMC--Complement Carry Flag

Opcode

Instruction

Description

F5

CMC

Complement CF flag

Description

Complements the CF flag in the EFLAGS register.

Operation

CF NOT CF;

Flags Affected

The CF flag contains the complement of its original value. The OF, ZF, SF, AF, and PF flags are unaffected.

Exceptions (All Operating Modes)

None.

 

 

 

 

 

 

 

For details, see Volume 2A and Volume 2B of the Intel(R) 64 and IA-32 Intel Architecture Software Developer's Manual. For the latest updates on the instruction set information, go to the web site.