liushuideng.lst

这个是自己编的流水灯的例子

A51 MACRO ASSEMBLER  LIUSHUIDENG                                                          04/12/2009 16:17:00 PAGE     1


MACRO ASSEMBLER A51 V7.01
OBJECT MODULE PLACED IN liushuideng.OBJ
ASSEMBLER INVOKED BY: G:\C51\keil 安装\C51\BIN\A51.EXE liushuideng.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

0000                   1             ORG 0000h
0000 0130              2             AJMP  main
0030                   3             ORG 0030h
0030 C297              4     MAIN:   CLR P1.7
0032 758107            5             MOV SP,#7
0035 74FE              6             MOV A,#0FEH     ; 让第一个发光管亮起来
0037 F580              7     LOOP:   MOV P0,A        ;从P0口输出到发光管
0039 12003F            8             LCALL DELAY     ;调用延时1S
003C 23                9             RL A            ;左移一位,下个发光管亮
003D 80F8             10             SJMP LOOP       ;循环
003F 780A             11     DELAY:  MOV R0, #10     ;延时1S子程序,使用参数R0,R6,R7 
0041 7F64             12     DELAY0: MOV R7, #100    ;延时0.1S
0043 7EFA             13     DELAY1: MOV R6, #250    ;延时1ms
0045 DEFE             14             DJNZ R6,$
0047 DFFA             15             DJNZ R7,DELAY1
0049 D8F6             16             DJNZ R0,DELAY0
004B 22               17             RET
                      18             END
A51 MACRO ASSEMBLER  LIUSHUIDENG                                                          04/12/2009 16:17:00 PAGE     2

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


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

DELAY. . . . . . .  C ADDR   003FH   A   
DELAY0 . . . . . .  C ADDR   0041H   A   
DELAY1 . . . . . .  C ADDR   0043H   A   
LOOP . . . . . . .  C ADDR   0037H   A   
MAIN . . . . . . .  C ADDR   0030H   A   
P0 . . . . . . . .  D ADDR   0080H   A   
P1 . . . . . . . .  D ADDR   0090H   A   
SP . . . . . . . .  D ADDR   0081H   A   


REGISTER BANK(S) USED: 0 


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