pg 227 9.1

1.

	mov	al,11010110
	and	al,01111000	;al = 01010000
	mov	al,11010110
	or	al,01111000	;al = 11111110
	mov	al,11010110
	xor	al,01111000	;al = 10101110
	mov	al,11010110
	not	al		;al = 00101001	

	mov	al,0C9
	and	al,1E		;al = 8h
	mov	al,0C9
	and	al,15		;al = 9h
	mov	al,0C9
	or	al,1E		;al = DFh
	mov	al,0C9
	xor	al,1E		;al = D7h
	mov	al,0C9
	not	al		;al = 36
	
2.

	and	SomeBits,1111110000011111	;set bits 5-9 to 0

	or	SomeBits,0000001111100000	;set bits 5-9 to 1

	and	SomeBits,1111110000011111	;set bits 5-9 to 1101
	or	SomeBits,0000001100100000
	
	xor	SomeBits,00001000000000000	;toggle bit 12
	
	check	SomeBits,0000000000001000	;if bit 3 is not zero, jump to ItsOn
	jnz	ItsOn
	
pg.233

1. 

	mov	cl,3
	mov	al,11010110
	sh1	al,1		al = 10101100	;shift left, add 0s
	mov	al,11010110
	shr	al,1		al = 01101011	;shift right, add 0s
	mov	al,11010110
	shl	al,cl		al = 10110000
	mov	al,11010110
	shr	al,cl		al = 00011010
	
	mov	al,11010110
	sal	al,1		al = 10101100	;sal = shl
	mov	al,11010110
	sar	al,1		al = 11101011	;shift right, add sign bit
	mov	al,11010110
	sal	al,cl		al = 10110000	
	mov	al,11010110
	sar	al,cl		al = 11111010
	
	mov	al,11010110
	rol	al,1		al = 1010110	;shift left, add number of end digits specified 
	mov	al,11010110
	ror	al,1		al = 01101011	;shift right, add number of end digits specified
	mov	al,11010110
	rol	al,cl		al = 10110110
	mov	al,11010110
	ror	al,cl		al = 11011010
	
	mov	al,3Ch
	shr	al,1		al = 1E
	mov	al,24
	shl	al,1		al = 48
	mov	al,24
	shr	al,1		al = 12
	mov	al,99h
	rol	al,1		al = 33h
	
pg. 196
1.
	mov	ax,1234h
	xchg	ah,al		al = 3412
	mov	ax,1234
	mov	bx,5678
	xchg	ax,bx		ax = 5678
				bx = 1234
	mov	ax,1234
	mov	bx,5678
	xchg	ah,bl		ax = 7834
				bx = 5612
	mov	ax,1111h
	mov	bx,2222h
	mov	cx,3333h
	xchg	ax,bx
	xchg	ax,cx		ax = 3333h
				bx = 1111h
				cx = 2222h
				
				
2.
a.
	mov	dx,ax
	mov	ax,bx
	mov	bx,dx
	
b.
	push	ax
	push	bx
	pop	ax
	pop	bx
	
c.	?