AAD - Ascii Adjust for Division

	Usage:	AAD
	Modifies flags: SF ZF PF (AF,CF,OF undefined)

	Used before dividing unpacked decimal numbers.	 Multiplies AH by
	10 and the adds result into AL.  Sets AH to zero.  This instruction
	is also known to have an undocumented behavior.

				 Clocks			Size
	Operands	 808x  286   386   486		Bytes

	none		  60	14    19    14		  2

	- see Instruction Timing