led8.lst

Keil C51 开发环境下开发的对8个端口指示灯的控制的单片机程序

A51 MACRO ASSEMBLER  LED8                                                                 03/23/2006 08:29:37 PAGE     1


MACRO ASSEMBLER A51 V6.12
OBJECT MODULE PLACED IN .\led8.OBJ
ASSEMBLER INVOKED BY: C:\KEIL\C51\BIN\A51.EXE .\led8.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

                       1     ;****************************************
                       2     ;功能：流水灯的显示实验
                       3     ;使用资源：P1口的输出
                       4     ;****************************************
0000                   5             ORG 00H
0000 0130              6             AJMP MAIN
0030                   7             ORG 030H
                       8     
0030 758107            9     MAIN:   MOV SP,#07H
0033 79FE             10             MOV R1,#0FEH
0035 D3               11             SETB C
0036                  12     LOOP:
0036 E9               13             MOV A,R1
0037 F590             14             MOV P1,A
0039 33               15             RLC A
003A F9               16             MOV R1,A
003B 120040           17             LCALL DLY
003E 0136             18             AJMP LOOP
                      19     ;-----------------------延时子程序
0040 7802             20     DLY:    MOV R0,#02
0042 7F64             21     DLY0:   MOV R7,#100
0044 7EFA             22     DLY1:   MOV R6,#250
0046 DEFE             23             DJNZ R6,$
0048 DFFA             24             DJNZ R7,DLY1
004A D8F6             25             DJNZ R0,DLY0
004C 22               26             RET
                      27             END
A51 MACRO ASSEMBLER  LED8                                                                 03/23/2006 08:29:37 PAGE     2

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


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

DLY. . . . . . . .  C ADDR   0040H   A   
DLY0 . . . . . . .  C ADDR   0042H   A   
DLY1 . . . . . . .  C ADDR   0044H   A   
LOOP . . . . . . .  C ADDR   0036H   A   
MAIN . . . . . . .  C ADDR   0030H   A   
P1 . . . . . . . .  D ADDR   0090H   A   
SP . . . . . . . .  D ADDR   0081H   A   


REGISTER BANK(S) USED: 0 


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