1 ; multi-segment executable file template. 2  3 data segment 4     STRING DB 'SPACE EXPLORERS INC' 5     PRLINE DB 'SPACE EXPLORERS INCE' 6     LAST   DB ' '   7     same   DB 'MATCH$' 8     nsame  DB 'NO MATCH$' 9 ends10 11 stack segment12     dw   128  dup(0)13 ends14 15 code segment16 start:17 ; set segment registers:18     mov ax, data19     mov ds, ax20     mov es, ax21 22     ; add your code here 23     mov cx,PRLINE-STRING        ;先判断长度，长度不相等直接不匹配24     cmp cx,LAST-PRLINE25     jnz NEQUAL26      27     lea si,STRING               ;长度相等则逐个匹配28     mov di,offset PRLINE29     cld30     rep cmpsb31     jz  EQUAL32     jnz NEQUAL33     34     EQUAL:                      ;输出结果35     lea dx,same 36     jmp NEXT 37     NEQUAL:38     lea dx,nsame39     NEXT:40     mov ah, 941     int 21h        ; output string at ds:dx42     43     ; wait for any key....    44     mov ah, 145     int 21h46     47     mov ax, 4c00h ; exit to operating system.48     int 21h    49 ends50 51 end start ; set entry point and stop the assembler.