MOVS - Move String (Byte or Word)

	Usage:	MOVS	dest,src
		MOVSD  (386+ only)
	Modifies flags: None

	Copies data from addressed by DS:SI (even if operands are given) to
	the location ES:DI destination and updates SI and DI based on the
	size of the operand or instruction used.  SI and DI are incremented
	when the Direction Flag is cleared and decremented when the Direction
	Flag is Set.  Use with REP prefixes.

				 Clocks			Size
	Operands	 808x  286   386   486		Bytes

	dest,src	  18	5     7	    7		  1   (W88=26)

	- see Instruction Timing