試編寫一段程式，要求比較兩個字串 string1 和 string2 所含字元是否相等，如相 等則顯示“MATCH”, 若不相同則顯示“NO MATCH”。
2017年5月25日23:54:01

data segment

str1 db '123456','$'
len1 equ $-str1

str2 db '123456','$'
len2 equ $-str2

match db 'MATCH!','$'
nomatch db 'NO MATCH!','$'
data ends

stack segment stack
 dw 20h dup(?) 
top label word
stack
 
 ends

code segment
    assume cs:code,ds:data,ss:stack
main proc far 

    mov ax,data
    mov ds,ax
    mov es,ax  ;this is important



    mov ax,stack
    mov ss,ax
    lea sp,top

    mov ah,len1
    mov al,len2

    cmp al,ah
    jne no

    mov ch,0
    mov cl,al

    lea si,str1
    lea di,str2
    cld
    repe cmpsb
    jne no

yes:
    lea dx,match
 

    mov ah,09h
    int 21h 
    jmp exit    

no: lea dx,nomatch
    mov ah,09h
    int 21h 

exit: 
    mov ah,4ch
    int 21h

main endp
 code  ends
  end main