Exercise 6.2_1 Pag 152


		A	DW	1111h
		B	DW	2222h

			        .......
	  		push	A
			mov	ax,        3333h
			push	ax
			push	B
			pop	ax   ;		ax  =     2222h

			pop	B     ;		B    =      3333h
			mov	bx,        4444h
			push	bx
			pop	ax		ax  =      4444h

			pop	bx		bx  =     2222h