CLTS - Clear Task Switched Flag (286+ privileged)

	Usage:	CLTS
	Modifies flags: None

	Clears the Task Switched Flag in the Machine Status Register.  This
	is a privileged operation and is generally used only by operating
	system code.

				 Clocks			Size
	Operands	 808x  286   386   486		Bytes

	none		  -	2     5	    7		  2

	- see Instruction Timing