pg 152-153

6.2.1

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 = 1111h
	
6.2.2

	What is the effect of:
	
		push	ax
		push	bx
		pop	ax
		pop	bx
		
	Pop takes out the last item added (or the newest item in the stack) so here, pop ax takes out the 
	value of bx and puts it in ax, then pop bx takes the vaue of ax and puts it in bx
	
6.2.3 

You can't save and restore sp using
		
		push	sp
		pop	sp
		
because when you push the value of sp, and then pop you want to pop it back into sp, it is already in sp

pg 109-110 (some done in previous HW)

4.

Eliminate jumps:

	cmp	A,14		cmp	A,14
	jge	S1		jnge	S2
	jmp	S2		mov	X,21
S1:				S2:
	mov	X,21
S2:

	cmp	X,ax		cmp	X,ax
	jne	L1		je	L2
	jmp	L2		neg	X
L1:				inc	X
	neg	X		L2:
	inc	X
L2:

	cmp	ax,0		cmp	ax,0
	jg	around		jng	over
	jmp	over		inc	ax
around:				jmp	through
	inc	ax		over:	dec,ax
	jmp	through		through:
over:
	dec	ax
through: