RETF              Return Far                         Flags: O D I T S Z A P C

RETF

           Logic:        pop    IP
                         pop    CS

     This instruction is the same as RET, except that it explicitly indicates
     that a far return is intended. IP is popped off the stack, followed by
     CS.

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   Operands                   Clocks   Transfers  Bytes  Example
   RETF                       26           -        1    RETF
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