1 DSEG SEGMENT 2 3 DATA DW 0A93EH 4 5 DSEG ENDS 6 CSEG SEGMENT ;设置代码段 7 ASSUME CS:CSEG,DS:DSEG 8 START: 9 MOV AX , DSEG 10 MOV DS , AX 11 MOV CL , 4H ;循环左移位数 12 MOV BX , DATA 13 14 ROL BX , CL 15 MOV DX , BX 16 AND DX , 000FH 17 CMP DL , 10 18 JC INT1 19 ADD DL , 7H 20 INT1: 21 ADD DL , 30H 22 MOV AH , 2 23 INT 21H 24 25 26 ROL BX , CL 27 MOV DX , BX 28 AND DX , 000FH 29 CMP DL , 10 30 JC INT2 31 ADD DL , 7H 32 INT2: 33 ADD DL , 30H 34 MOV AH , 2 35 INT 21H 36 37 38 ROL BX , CL 39 MOV DX , BX 40 AND DX , 000FH 41 CMP DL , 10 42 JC INT3 43 ADD DL , 7H 44 INT3: 45 ADD DL , 30H 46 47 MOV AH , 2 48 INT 21H 49 50 51 ROL BX , CL 52 MOV DX , BX 53 AND DX , 000FH 54 CMP DL , 10 55 JC INT4 56 ADD DL , 7H 57 INT4: 58 ADD DL , 30H 59 MOV AH , 2 60 INT 21H 61 62 MOV AX, 4C00H ;返回DOS 63 INT 21H 64 CSEG ENDS ;代码段结束 65 66 END START ;汇编语言源程序结束