da14－3.lst

51单片机开发入门与典型实例

A51 MACRO ASSEMBLER  DA14__3                                                              01/07/2007 21:52:50 PAGE     1


MACRO ASSEMBLER A51 V7.07
OBJECT MODULE PLACED IN DA14－3.OBJ
ASSEMBLER INVOKED BY: C:\Keil7.06\C51\BIN\A51.EXE DA14－3.ASM SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

                       1     
                       2     ; 文件名：DA14-3.ASM
                       3     ; 程序功能：DAC输出锯齿波
0000                   4      MAIN:  
0000 7400              5             MOV  A,#0H              
0002 F5A0              6      LOOP:  MOV  P2,A           
0004 F590              7             MOV  P1,A        
0006 110B              8             ACALL  DELAY         
0008 04                9             INC  A                                      
0009 80F7             10             JMP  LOOP
                      11                                        
                      12        ;---显示延时---------- 
000B                  13       DELAY:
000B 7D05             14             MOV  R5,#5
000D 7E64             15       D1:   MOV  R6,#100
000F 7F64             16       D2:   MOV  R7,#100
0011 DFFE             17             DJNZ R7,$
0013 DEFA             18             DJNZ R6,D2
0015 DDF6             19             DJNZ R5,D1
0017 22               20             RET
                      21             END       
A51 MACRO ASSEMBLER  DA14__3                                                              01/07/2007 21:52:50 PAGE     2

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


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

D1 . . . . . . . .  C ADDR   000DH   A   
D2 . . . . . . . .  C ADDR   000FH   A   
DELAY. . . . . . .  C ADDR   000BH   A   
LOOP . . . . . . .  C ADDR   0002H   A   
MAIN . . . . . . .  C ADDR   0000H   A   
P1 . . . . . . . .  D ADDR   0090H   A   
P2 . . . . . . . .  D ADDR   00A0H   A   


REGISTER BANK(S) USED: 0 


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