计数器.lst

计数器的源码

A51 MACRO ASSEMBLER  计数芲                                                               10/28/2008 20:06:31 PAGE     1


MACRO ASSEMBLER A51 V8.00
OBJECT MODULE PLACED IN 计数器.obj
ASSEMBLER INVOKED BY: C:\Keil\C51\BIN\A51.EXE 计数器\计数器.asm SET(SMALL) DEBUG PRINT(.\计数器.lst) OBJECT(计数器.obj) EP

LOC  OBJ            LINE     SOURCE

  0030                 1     COUNT  EQU  30H
  00B7                 2     KEY1  BIT   P3.7
0000                   3     ORG  0000H
0000 020030            4     LJMP START
0030                   5     ORG  0030H
0030 753000            6     START:  MOV  COUNT, #00H
                       7     
0033 E530              8     NEXT:   MOV  A,COUNT
0035 75F00A            9                     MOV  B,#10
0038 84               10                     DIV  AB
0039 900076           11                     MOV  DPTR,#TABLE
003C 93               12                     MOVC  A,@A+DPTR
003D C2A1             13                     CLR  P2.1         ;打开位选1数码管
003F F580             14                     MOV  P0,A
0041 116D             15                     ACALL DELAY
0043 7580FF           16                     MOV  P0,#0XFF   ;消隐
0046 D2A1             17                     SETB  P2.1              ;关闭位选1
0048 E5F0             18                     MOV  A,B
004A 93               19                     MOVC  A,@A+DPTR;送段选2
004B C2A0             20                     CLR  P2.0           ;打开位选2数码管
004D F580             21                     MOV  P0,A               ;
004F 116D             22                     ACALL DELAY
0051 7580FF           23                     MOV   P0,#0FFH  ;消隐
0054 D2A0             24                     SETB  P2.0              ;关闭位选2
0056 30B6D7           25                     JNB   P3.6,START
0059 20B7D7           26                     JB    KEY1,NEXT
                      27     
005C 30B7FD           28     WAIT:   JNB   KEY1,WAIT
005F 116D             29                     ACALL DELAY
0061 30B7F8           30                     JNB   KEY1,WAIT
0064 0530             31                     INC   COUNT
0066 E530             32                     MOV   A,COUNT
0068 B464C8           33                     CJNE  A,#100,NEXT
006B 0130             34                     AJMP  START
                      35     
006D 7F02             36     DELAY:  MOV  R7,#2               ;延时程序
006F 7E64             37        D1:  MOV  R6,#100
0071 DEFE             38                     DJNZ R6,$
0073 DFFA             39                     DJNZ R7,D1
0075 22               40                     RET
                      41     
0076 039F250D         42     TABLE:  DB  03H,9FH,25H,0DH,99H,49H,41H,1FH,01H,09H 
007A 9949411F                
007E 0109                    
                      43     END
A51 MACRO ASSEMBLER  计数芲                                                               10/28/2008 20:06:31 PAGE     2

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


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

B. . . . . . . . .  D ADDR   00F0H   A   
COUNT. . . . . . .  N NUMB   0030H   A   
D1 . . . . . . . .  C ADDR   006FH   A   
DELAY. . . . . . .  C ADDR   006DH   A   
KEY1 . . . . . . .  B ADDR   00B0H.7 A   
NEXT . . . . . . .  C ADDR   0033H   A   
P0 . . . . . . . .  D ADDR   0080H   A   
P2 . . . . . . . .  D ADDR   00A0H   A   
P3 . . . . . . . .  D ADDR   00B0H   A   
START. . . . . . .  C ADDR   0030H   A   
TABLE. . . . . . .  C ADDR   0076H   A   
WAIT . . . . . . .  C ADDR   005CH   A   


REGISTER BANK(S) USED: 0 


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