lesson.lst

单片机实验

A51 MACRO ASSEMBLER  LESSON                                                               04/29/2008 19:08:13 PAGE     1


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

LOC  OBJ            LINE     SOURCE

                       1     NAME    T1_1            ;P1口输实验
----                   2     CSEG AT 0000H
0000 024100            3             LJMP START
----                   4     CSEG AT 4100H
4100 74FE              5     START:  MOV A,#0FEH
4102 23                6     LOOP:   RL  A           ; 左移一位，点亮下一个发光二极管
4103 F590              7             MOV P1,A
4105 12410A            8             LCALL DELAY             ;延时 0.1秒
4108 80F8              9             JMP   LOOP
                      10     
410A 79E8             11     DELAY:  MOV R1,#1000     ; 延时0.1秒
*** _________________________________________^
*** WARNING #A52 IN 11 (lesson.asm, LINE 11): VALUE HAS BEEN TRUNCATED TO 8 BITS
410C 7AB8             12     DEL1:   MOV R2,#3000
*** _________________________________________^
*** WARNING #A52 IN 12 (lesson.asm, LINE 12): VALUE HAS BEEN TRUNCATED TO 8 BITS
410E DAFE             13     DEL2:   DJNZ  R2,DEL2
4110 D9FA             14             DJNZ  R1,DEL1
4112 22               15             RET
                      16         
                      17             END
A51 MACRO ASSEMBLER  LESSON                                                               04/29/2008 19:08:13 PAGE     2

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


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

DEL1 . . . . . . .  C ADDR   410CH   A   
DEL2 . . . . . . .  C ADDR   410EH   A   
DELAY. . . . . . .  C ADDR   410AH   A   
LOOP . . . . . . .  C ADDR   4102H   A   
P1 . . . . . . . .  D ADDR   0090H   A   
START. . . . . . .  C ADDR   4100H   A   
T1_1 . . . . . . .  N NUMB   -----       


REGISTER BANK(S) USED: 0 


ASSEMBLY COMPLETE.  2 WARNING(S), 0 ERROR(S)