这是一个把四位十进制数转化为十六进制数的汇编语言程序
data segment tital1 db 'Please input shi jin zi shu (example 1234): ','$' tital2 db 'It is transpranted into shi liu jin zi shu :','$' tital3 db 'Do you want to have a try again (yes "y",no "n"): ','$' tital4 db 'Welcome to use this program It is made by WQ 2012/5/17','$' kongzi db 0dh,0ah,'$' jichun dw 0000h yushu db 5 dup(00) duandian db 'jianche dian',0dh,0ah,'$' data ends code segment assume cs:code,ds:data start: mov ax,data mov ds,ax retry: lea dx,kongzi ;换行回车 mov ah,09h int 21h lea dx,tital1 ;输出抬头1please input 1234 mov ah,09h int 21h mov al,0 ;初始化al mov ah,01h ;输入并回显 int 21h mov bh,al ;千位放在bh中保存 mov ah,01h int 21h mov bl,al ;百位放在bl中 mov ah,01h int 21h mov ch,al ;十位放在ch中 mov ah,01h int 21h mov cl,al ;个位放在cl中 ;bh,bl,ch,cl 都没问题 lea dx,kongzi ;换行回车 mov ah,09h int 21h lea dx,tital2 ;输出抬头2 mov ah,09h int 21h mov ax,0 ;初始化ax sub bh,30h ;把ascII码转化为十进制数 mov al,bh ;输入的第一个数（千位数） ;over mov si,0ah ;10权值 mul si ;ax被乘1000 over mul si mul si mov jichun,ax ;over mov ax,0 sub bl,30h mov al,bl ;ax被乘100 mul si mul si add jichun,ax mov ax,0 sub ch,30h mov al,ch mul si ;ax乘10 add jichun,ax mov ax,0 sub cl,30h mov al,cl add jichun,ax ;彻底转化为十进制数 mov ax,jichun ; ax中为9999转化为16进制数270f ;over;;;;;;;;;;;;;;;;;;;;;;;; mov dx,0;初始化 mov di,0;指针为0 mov bx,0010h quyu: div bx ;默认 ax mov yushu[di],dl inc di mov dx,0 cmp ax,10h jae quyu mov yushu[di],al inc di mov cx,di dec di shuchu: mov dl,yushu[di] dec di cmp dl,0ah jnae l2 add dl,37h mov ah,02h int 21h jmp jiedian l2: add dl,30h mov ah,02h int 21h jiedian: loop shuchu tishi: lea dx,kongzi;控制换行回车 mov ah,09h int 21h lea dx,tital3;输出抬头3 mov ah,09h int 21h mov ah,01h ;判断是否继续 int 21h cmp al,'y' je retry lea dx,kongzi;控制换行回车 mov ah,09h int 21h lea dx,tital4 mov ah,09h int 21h
over: ;结束 mov ah,4ch int 21h code ends end start
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