SAR - Shift Arithmetic Right

	Usage:	SAR	dest,count
	Modifies flags: CF OF PF SF ZF (AF undefined)


	Shifts the destination right by "count" bits with the current sign
	bit replicated in the leftmost bit.  The Carry Flag contains the
	last bit shifted out.

				 Clocks			Size
	Operands	 808x  286   386   486		Bytes

	reg,1		  2	2     3	    3		  2
	mem,1		15+EA	7     7	    4		 2-4  (W88=23+EA)
	reg,CL		 8+4n  5+n    3	    3		  2
	mem,CL	      20+EA+4n 8+n    7	    4		 2-4  (W88=28+EA+4n)
	reg,immed8	  -    5+n    3	    2		  3
	mem,immed8	  -    8+n    7	    4		 3-5


	- see Instruction Timing