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- assume cs:code,ds:data,cs:stack
- data segment
- db 10 dup (0)
- data ends
- stack segment
- db 16 dup (0)
- stack ends
- code segment
- start:
- mov ax,stack
- mov ss,ax
- mov sp,16
- mov ax,12666
- mov bx,data
- mov ds,bx
- mov si,0
- call dtoc
- mov dh,8
- mov dl,3
- mov cl,2
- mov si,0
- call show_str
- mov ax,4c00h
- int 21h
- dtoc:mov cx,10
- div cx
- mov cx,ax
- jcxz ok
- add dx,30h
- mov ds:[si],dx
- mov dx,0
- inc si
- jmp short dtoc
- ok:
- add dx,30h
- mov ds:[si],dx
- ret
- show_str: push cx
- push dx
- mov al,dl;dl 是列数
- mov ah,0
- mov di,ax
- mov ax,0b800h
- mov es,ax
- mov cl,ds:[si];第一个字母
- mov ch,0
- jcxz ook
- mov al,160
- mul dh;dh是行数
- pop dx
- mov bx,ax
- mov es:[bx+di+1],cl
- pop cx
- mov es:[bx+di+2],cl
- inc si
- add di,2
- jmp short show_str
- ook:
- pop dx
- pop cx
- ret
- code ends
- end start
复制代码 代码如上,debug 的时候一切正常,直接在cmd下运行该程序是提示Divide overflow
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