LAR - Load Access Rights (286+ protected)

        Usage:  LAR     dest,src
        Modifies flags: ZF

        The high byte of the of the destination register is overwritten by
        the value of the access rights byte and the low order byte is zeroed
        depending on the selection in the source operand.  The Zero Flag is
        set if the load operation is successful.

                                 Clocks                 Size
        Operands         808x  286   386   486          Bytes

        reg16,reg16       -     14    15    11            3
        reg32,reg32       -     -     15    11            3
        reg16,mem16       -     16    16    11           3-7
        reg32,mem32       -     -     16    11           3-7


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