Opcode CMPXCHG
CPU: I486+
Type of Instruction: User
Instruction: CMPXCHG dest, src
Description: Compares the accumulator with dest. If equal the "dest"
is loaded with "src", otherwise the accumulator is loaded
with "dest".
Flags Affected: AF, CF, OF, PF, SF, ZF
CPU mode: RM,PM,VM,SMM
+++++++++++++++++++++++
Clocks:
CMPXCHG reg, reg 6
CMPXCHG mem, reg 7 (10 if compartion fails)
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