绗?/p>
2
绔狅紙
03
锛?/p>
2.12;
鎸囦护
娉ㄩ噴
鎵ц缁撴灉
CF OF SF ZF PF
mov si,ax
si=ax
si=0008h
-
-
-
-
-
shl si,1
si=2*ax
si=0010h
0
0
0
0
0
add si,ax
si=3*ax
si=0018h
0
0
0
0
1
mov dx,bx
dx=bx
dx=0010h
-
-
-
-
-
mov cl,03h
cl=03h
-
-
-
-
-
shl dx,cl
dx=8*bx
dx=0080h
0
u
0
0
0
sub dx,bx
dx=7*bx
dx=0070h
0
0
0
0
0
add dx,si
dx=7*bx+3*ax
dx=0088h
0
0
0
0
1
娉ㄦ剰锛?/p>
1.
宸︾Щ
N
娆＄浉褰撲簬涔樹簬
2
鐨?/p>
N
娆℃柟锛屽彸宸︾Щ
N
娆＄浉褰撲簬闄や箻浜?/p>
2
鐨?/p>
N
娆℃柟銆?/p>
2.
绉讳綅鎸囦护鏍规嵁鏄惁绉诲叆
鈥?/p>
1
鈥?/p>
鍒?/p>
CF,
璁剧疆
CF,
鏍规嵁绉讳綅鍚庣殑缁撴灉褰卞搷
SF,ZF,PF
銆?/p>
鏍规嵁鏈�楂樼鍙?/p>
浣嶆槸鍚︽敼鍙樿缃?/p>
OF
锛屽鏀瑰彉
OF=1.
3.
鈥?/p>
u
鈥欒〃绀烘棤瀹氫箟锛?/p>
鈥?/p>
-
鈥欒〃绀烘棤褰卞搷銆?/p>
2.13; (1)
;
涓嶈�冭檻杩涗綅
mov bl,al
mov cl,3
shl al,cl
add al,bl
;shl bl,1
add al,bl