为什么这个程序一运行cmd就死机了???
assume cs:codedata segment
db "welcome to masm!",0
data ends
code segment
start:mov ax,cs
mov ds,ax
mov bx,offset xian
mov ax,0
mov es,ax
mov si,200h
mov cx,offset s-offset s1;长度
cld
rep movsb
mov ax,0
mov es,ax
mov word ptr es:,200h
mov word ptr es:,0
xian: mov ax,0b800h
mov es,ax
mov di,10*0a0h+10
mov cl,2
s: mov dl,cl
mov al,ds:
mov es:,al
mov es:,cl
mov cl,al
mov ch,0
jcxz ok
inc bx
add di,2
mov cl,dl
jmp short s
ok:mov ax,4c00h
int 21h
s1:nop
code ends
end start
本帖最后由 莫名其妙 于 2012-3-13 20:17 编辑
mov di,10*0a0h+10 像这种 既然你用了10进制 就别后面跟16进制的数
start:mov ax,cs
mov ds,ax
mov bx,offset xian
mov ax,0
mov es,ax
mov si,200h
mov cx,offset s-offset s1;长度X
cld
rep movsb
movsb将ds:的内容复制到es:这个请仔细看下11.10章
mov ax,0
mov es,ax
mov word ptr es:,200h
mov word ptr es:,0
这里就是你程序为什么不结束的原因后面的结束语句没有加上
mov ax,4c00h
int 21h
xian: mov ax,0b800h
mov es,ax 这一段问题很大啊
mov di,10*0a0h+10
mov cl,2
s: mov dl,cl 循环 位置设置问题
mov al,ds:
mov es:,al
mov es:,cl
mov cl,al
mov ch,0 判断是否为0应该在循环开始就进行判断
jcxz ok
inc bx
add di,2
mov cl,dl 这句话完全没必要 你都已经吧CL 给dl 了CL 要去进行为0判断 这里在给赋值回去干啥?
jmp short s
本帖最后由 莫名其妙 于 2012-3-13 21:04 编辑
assume cs:code
code segment
start:mov ax,cs
mov ds,ax
mov si,offset xian
mov ax,0
mov es,ax
mov di,200h
mov cx,offset s1-offset xian;长度
cld
rep movsb
mov ax,0
mov es,ax
mov word ptr es:,200h
mov word ptr es:,0
mov ax,4c00h
int 21h
xian: push ax
push bx
push cx
push dx
push si
push di
mov ax,0b800h
mov es,ax
mov di,10*160+10
mov cl,2
mov dl,cl
s: mov al,ds:
mov cl,al
mov ch,0
jcxz ok
mov es:,al
mov es:,dl
inc bx
add di,2
jmp short s
ok:pop di
pop si
pop dx
pop cx
pop bx
pop ax
iret
mov ax,4c00h
int 21h
s1:nop
code ends
end start
这是调用int 7ch
assume cs:code
data segment
db 'welcome to masm!',0
data ends
code segment
start:mov ax,data
mov ds,ax
mov bx,0
int 7ch
mov ax,4c00h
int 21h
code ends
end start
莫名其妙 发表于 2012-3-13 16:36 static/image/common/back.gif
mov di,10*0a0h+10 像这种 既然你用了10进制 就别后面跟16进制的数
明白了,非常感谢,那个今天有点事,所以来迟了,不能评分了{:5_92:} 莫名其妙 发表于 2012-3-13 21:01 static/image/common/back.gif
assume cs:code
code segment
哥们真厉害,佩服 格式天下 发表于 2012-3-14 22:08 static/image/common/back.gif
哥们真厉害,佩服
我也掰持了1小时呢... 我机器上运行也有问题后来重启了才好!~
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