0%

王爽汇编语言 实验11


🍀王爽 《汇编语言》 实验11解答🍀

1、显示字符串
在这里插入图片描述
解:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
assume cs:code 
data segment
db 'Welcome to masm!',0
data ends

code segment
start:
mov dh,8
mov dl,3
mov cl,2
mov ax,data
mov ds,ax
mov si,0
call show_str

mov ax,4c00h
int 21h

show_str:
push ax
push bx
push cx
push dx
push si

mov ah,0
mov al,dh
mov dh,0Ah
mul dh

add ax,0b800h
mov es,ax

mov al,dl
mov dl,2
mul dl
mov bx,ax

s:
mov al,ds:[si]
cmp al,0
je ok
mov ah,cl

mov es:[bx],ax

inc si
add bx,2
jmp s

ok:

pop si
pop dx
pop cx
pop bx
pop ax

ret
code ends
end start

2、除法溢出
在这里插入图片描述
在这里插入图片描述
解:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
assume cs:code 
code segment
start:
mov ax,4240h
mov dx,000fh
mov cx,0ah
call divdw

mov ax,4c00h
int 21h
divdw:
push bx

mov bx,ax
mov ax,dx
mov dx,0
div cx

push ax
mov ax,bx
div cx
mov cx,dx
pop dx

pop bx
ret
code ends
end start

3、数值显示
在这里插入图片描述
在这里插入图片描述
解:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
assume cs:code 
data segment
db 10 dup(0)
data ends
code segment
start:
mov ax,12666
mov bx,data
mov ds,bx
mov si,0
call dtoc

mov dh,8
mov dl,3
mov cl,2
call show_str

mov ax,4c00h
int 21h
dtoc:
push dx
push cx
push si

mov cx,11
push cx
mov cx,10
s: mov dx,0
div cx
push dx
cmp ax,0
jne s

s1:
pop ax
add ax,30h
mov ds:[si],ax
inc si
cmp ax,3Bh
jne s1

sub si,1
mov ax,0
mov ds:[si],ax

pop si
pop cx
pop dx
ret

show_str:
push ax
push bx
push cx
push dx
push si

mov ah,0
mov al,dh
mov dh,0Ah
mul dh

add ax,0b800h
mov es,ax

mov al,dl
mov dl,2
mul dl
mov bx,ax

s2:
mov al,ds:[si]
cmp al,0
je ok
mov ah,cl

mov es:[bx],ax

inc si
add bx,2
jmp s2

ok:

pop si
pop dx
pop cx
pop bx
pop ax

ret
code ends
end start
------------------本文已结束感谢阅读~------------------