JLE/JNG - Jump Less or Equal / Jump Not Greater

	Usage:	JLE	label
		JNG	label
	Modifies flags: None

	Causes execution to branch to "label" if the Zero Flag is set or the
	Sign Flag is not equal to the Overflow Flag.  Signed comparision.

				 Clocks			Size
	Operands	 808x  286   386   486		Bytes

	label:	jump	  16   7+m   7+m    3		 2-4
		no jump	  4	3     3	    1

	- see Instruction Timing