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 ends 10 11 stack segment 12 dw 128 dup(0) 13 ends 14 15 code segment 16 start: 17 ; set segment registers: 18 mov ax, data 19 mov ds, ax 20 mov es, ax 21 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-PRLINE 25 jnz NEQUAL 26 27 lea si,STRING ;长度相等则逐个匹配 28 mov di,offset PRLINE 29 cld 30 rep cmpsb 31 jz EQUAL 32 jnz NEQUAL 33 34 EQUAL: ;输出结果 35 lea dx,same 36 jmp NEXT 37 NEQUAL: 38 lea dx,nsame 39 NEXT: 40 mov ah, 9 41 int 21h ; output string at ds:dx 42 43 ; wait for any key.... 44 mov ah, 1 45 int 21h 46 47 mov ax, 4c00h ; exit to operating system. 48 int 21h 49 ends 50 51 end start ; set entry point and stop the assembler.