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


	- see Instruction Timing