ledtest2.lst

51单片机实验课程：流水灯程序 用汇编或者c语言均可

A51 MACRO ASSEMBLER  LEDTEST2                                                             11/07/2007 15:54:34 PAGE     1


MACRO ASSEMBLER A51 V7.07
OBJECT MODULE PLACED IN ledtest2.OBJ
ASSEMBLER INVOKED BY: C:\Program Files\Keil\C51\BIN\A51.EXE ledtest2.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

0000                   1             ORG     0000H
0000 2100              2             AJMP    START
0100                   3             ORG     0100H
                       4     
0100                   5     START:
0100 7590FE            6             MOV     P1, #0FEH       ;点亮第一个灯
0103 310E              7             CALL    DELAY           ;调用延时程序进行延时
0105 E590              8     LOOP:   MOV     A, P1           ;将P1口的数据左移一位输出
0107 23                9             RL      A
0108 F590             10             MOV     P1, A           
010A 310E             11             CALL    DELAY
010C 2105             12             AJMP    LOOP    
                      13     
010E                  14     DELAY:
010E 79FF             15             MOV     R1, #255        ;延时子程序
0110 78FF             16     JJ1:    MOV     R0, #255
0112 D8FE             17             DJNZ    R0, $
0114 D9FA             18             DJNZ    R1, JJ1
0116 22               19             RET
                      20     
                      21             END
A51 MACRO ASSEMBLER  LEDTEST2                                                             11/07/2007 15:54:34 PAGE     2

SYMBOL TABLE LISTING
------ ----- -------


N A M E             T Y P E  V A L U E   ATTRIBUTES

DELAY. . . . . . .  C ADDR   010EH   A   
JJ1. . . . . . . .  C ADDR   0110H   A   
LOOP . . . . . . .  C ADDR   0105H   A   
P1 . . . . . . . .  D ADDR   0090H   A   
START. . . . . . .  C ADDR   0100H   A   


REGISTER BANK(S) USED: 0 


ASSEMBLY COMPLETE.  0 WARNING(S), 0 ERROR(S)