p1口的应用（二）.lst

基于Proteus的51系列单片机设计与仿真

A51 MACRO ASSEMBLER  P1口的觃用__二__                                                     05/01/2008 17:41:32 PAGE     1


MACRO ASSEMBLER A51 V7.07
OBJECT MODULE PLACED IN P1口的应用（二）.OBJ
ASSEMBLER INVOKED BY: C:\Keil\C51\BIN\A51.EXE P1口的应用（二）.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

0030                   1           ORG  0030H
0030 74FF              2           MOV  A,#0FFH     ;将P1口全置1
0032 F590              3           MOV  P1,A
0034 209017            4     LOOP: JB   P1.0,EXIT   ;P1.2是否为低电平
0037 B291              5           CPL  P1.1        ;P1.1闪烁
0039 C297              6           CLR  P1.7        ;P1.7控制麦克风发声
003B 120045            7           LCALL DELAY
003E D297              8           SETB  P1.7
0040 120045            9           LCALL DELAY
0043 0134             10           AJMP LOOP
0045 7FC8             11     DELAY:MOV R7,#200
0047 7EF8             12         D1:MOV R6,#248
0049 DEFE             13         D2:DJNZ R6,$
004B DFFA             14            DJNZ R7,D1
004D 22               15            RET
004E 00               16     EXIT: NOP
                      17           END      
                             
A51 MACRO ASSEMBLER  P1口的觃用__二__                                                     05/01/2008 17:41:32 PAGE     2

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


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

D1 . . . . . . . .  C ADDR   0047H   A   
D2 . . . . . . . .  C ADDR   0049H   A   
DELAY. . . . . . .  C ADDR   0045H   A   
EXIT . . . . . . .  C ADDR   004EH   A   
LOOP . . . . . . .  C ADDR   0034H   A   
P1 . . . . . . . .  D ADDR   0090H   A   


REGISTER BANK(S) USED: 0 


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