led.lst

单片机开发板源程序适合初学者 第六部分 继电器输出控制

A51 MACRO ASSEMBLER  LED                                                                  07/29/2007 11:36:28 PAGE     1


MACRO ASSEMBLER A51 V7.07
OBJECT MODULE PLACED IN LED.OBJ
ASSEMBLER INVOKED BY: C:\Tools\Keil\C51\BIN\A51.EXE LED.ASM SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

0000                   1                     ORG 0
0000 C280              2     START:          CLR P0.0
0002 12000D            3                     LCALL DELAY
0005 D280              4                     SETB P0.0
0007 12000D            5                     LCALL DELAY
000A 020000            6                     LJMP START
000D 7D14              7     DELAY:          MOV R5,#20                      ;延时子程序，延时0.2秒
000F 7E14              8     D1:             MOV R6,#20
0011 7FE6              9     D2:             MOV R7,#230
0013 DFFE             10                     DJNZ R7,$
0015 DEFA             11                     DJNZ R6,D2
0017 DDF6             12                     DJNZ R5,D1
0019 22               13                     RET
                      14                     END
A51 MACRO ASSEMBLER  LED                                                                  07/29/2007 11:36:28 PAGE     2

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


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

D1 . . . . . . . .  C ADDR   000FH   A   
D2 . . . . . . . .  C ADDR   0011H   A   
DELAY. . . . . . .  C ADDR   000DH   A   
P0 . . . . . . . .  D ADDR   0080H   A   
START. . . . . . .  C ADDR   0000H   A   


REGISTER BANK(S) USED: 0 


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