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CMC -- Complement Carry Flag

Opcode    Instruction    Clocks   Description

F5        CMC            2        Complement carry flag

Operation

CF := NOT CF;

Description

CMC reverses the setting of the carry flag. No other flags are affected.

Flags Affected

CF as described above

Protected Mode Exceptions

None

Real Address Mode Exceptions

None

Virtual 8086 Mode Exceptions

None

up: Chapter 17 -- 80386 Instruction Set
prev: CLTS Clear Task-Switched Flag in CR0
next: CMP Compare Two Operands