LGDT - Load Global Descriptor Table (286+ privileged)

	Usage:	LGDT	src
	Modifies flags: None


	Loads a value from an operand into the Global Descriptor Table
	(GDT) register.


				 Clocks			Size
	Operands	 808x  286   386   486		Bytes

	mem64		  -	11    11    11		  5


	- see Instruction Timing