123.lst

来自「很实用的单片机例程」· LST 代码 · 共 45 行

A51 MACRO ASSEMBLER  123                                                                  07/07/2006 14:03:24 PAGE     1


MACRO ASSEMBLER A51 V6.12
OBJECT MODULE PLACED IN .\123.OBJ
ASSEMBLER INVOKED BY: C:\Keil\C51\BIN\A51.EXE .\123.ASM SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

                       1     ;平凡入门教程第二课,让点亮后的LED发光管可以闪动
                       2     
0000                   3     LOOP: 
                       4     
0000 C2B4              5     CLR P3.4;
                       6     
0002 0100              7     AJMP LOOP;通笰JMP执行LOOP,从最开始循环执行,无限循环下去
                       8     
0004 7FFA              9     DELAY: MOV R7,#250
0006 7EFA             10     D1: MOV R6,#250
0008 DEFE             11     D2: DJNZ R6,D2
000A DFFA             12     DJNZ R7,D1
000C 22               13     RET
                      14     END
                             
                             
A51 MACRO ASSEMBLER  123                                                                  07/07/2006 14:03:24 PAGE     2

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


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

D1 . . . . . . . .  C ADDR   0006H   A   
D2 . . . . . . . .  C ADDR   0008H   A   
DELAY. . . . . . .  C ADDR   0004H   A   
LOOP . . . . . . .  C ADDR   0000H   A   
P3 . . . . . . . .  D ADDR   00B0H   A   


REGISTER BANK(S) USED: 0 


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