汇编程序40：检测点11.3 

 1 assume cs:code
 2 //统计在076b:0起32个字节中数值在[32,128]的个数,使用jb,ja指令
 3 code segment
 4     start:
 5           mov ax,076bh
 6           mov ds,ax
 7           mov bx,0
 8           mov dx,0
 9           mov cx,32
10         s:
11           mov al,[bx]
12           cmp al,32
13           jb s0
14           cmp al,128
15           ja s0
16           inc dx
17        s0:
18           inc bx
19           loop s
20           mov ax,4c00h
21           int 21h
22 code ends
23 
24 end start

 

 1 assume cs:code
 2 //统计在076b:0起32个字节中数值在(32,128)的个数,使用jnb,jna指令
 3 code segment
 4     start:
 5           mov ax,076bh
 6           mov ds,ax
 7           mov bx,0
 8           mov dx,0
 9           mov cx,32
10         s:
11           mov al,[bx]
12           cmp al,32
13           jna s0
14           cmp al,128
15           jnb s0
16           inc dx
17        s0:
18           inc bx
19           loop s
20           mov ax,4c00h
21           int 21h
22 code ends
23 
24 end start

 

posted on 2018-02-03 10:15  叶倾仙  阅读(481)  评论(1)    收藏  举报

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