王爽汇编实验（九）

任务：在屏幕中间分别显示绿色，绿底红色，白底蓝色的字符串'welcome to masm！'

 

 1 assume cs:codesg,ds:datasg,ss:stack
 2 
 3 datasg segment
 4 db 'welcome to masm!'
 5 datasg ends
 6 
 7 stack segment
 8 db 16 dup (0)
 9 stack ends
10 
11 codesg segment
12 
13 start:mov ax,datasg
14 mov ds,ax
15 mov  ax,0B800h
16 mov es,ax
17 mov bx,0
18 mov ax,stack
19 mov ss,ax
20 mov sp,16
21 s:
22 mov cx,16
23 mov si,0
24 s1:
25 mov al,ds:[bx]
26 mov byte ptr es:[380h+si],al
27 mov byte ptr es:[381h+si],2H
28 add si,2
29 inc bx
30 loop s1
31 mov cx,16
32 mov si,0
33 mov bx,0
34 s2:
35 mov al,ds:[bx]
36 mov byte ptr es:[420h+si],al
37 mov byte ptr es:[421h+si],24H
38 add si,2
39 inc bx
40 loop s2
41 mov cx,16
42 mov si,0
43 mov bx,0
44 s3:
45 mov al,ds:[bx]
46 mov byte ptr es:[4c0h+si],al
47 mov byte ptr es:[4c1h+si],71H
48 add si,2
49 inc bx
50 loop s3
51 
52 mov ax,4c10H
53 int 21H
54 codesg ends
55 end start

posted @ 2019-11-24 08:03  世界を変える御宅族  阅读(267)  评论(0)  编辑  收藏  举报