A51 MACRO ASSEMBLER  ADC0809_BASIC                                                        08/01/2006 10:17:06 PAGE     1


MACRO ASSEMBLER A51 V8.00
OBJECT MODULE PLACED IN ADC0809 Basic.OBJ
ASSEMBLER INVOKED BY: e:\Program Files\Keil\C51\BIN\A51.EXE ADC0809 Basic.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

  0030                 1     LED_0   EQU     30H                             ;存放三個數碼管的段碼
  0031                 2     LED_1   EQU     31H
  0032                 3     LED_2   EQU     32H
                       4     
  0035                 5     ADC             EQU             35H                             ;存放轉換后的數據
  00B2                 6     ST              BIT     P3.2
  00B0                 7     OE              BIT     P3.0
  00B1                 8     EOC     BIT     P3.1
0000                   9                     ORG     00H
                      10     
0000 753000           11     START:  MOV             LED_0,#00H
0003 753100           12                     MOV             LED_1,#00H
0006 753200           13                     MOV             LED_2,#00H
0009 900068           14                     MOV             DPTR,#TABLE             ;送段碼表首地址
                      15     
000C D2B4             16                     SETB    P3.4
000E D2B5             17                     SETB    P3.5
0010 C2B6             18                     CLR             P3.6                    ;選擇ADC0808的通道3
                      19     
0012 C2B2             20     WAIT:   CLR     ST
0014 D2B2             21                     SETB    ST
0016 C2B2             22                     CLR     ST                              ;啟動轉換
0018 30B1FD           23                     JNB     EOC,$                   ;等待轉換結束
001B D2B0             24                     SETB    OE                              ;允許輸出
001D 859035           25                     MOV     ADC,P1                  ;暫存轉換結果
0020 C2B0             26                     CLR     OE                              ;關閉輸出
0022 E535             27                     MOV     A,ADC                   ;將AD轉換結果轉換成BCD碼
0024 75F064           28                     MOV     B,#100
0027 84               29                     DIV     AB
0028 F532             30                     MOV     LED_2,A
002A E5F0             31                     MOV     A,B
002C 75F00A           32                     MOV     B,#10
002F 84               33                     DIV     AB
0030 F531             34                     MOV     LED_1,A
0032 85F030           35                     MOV     LED_0,B
0035 12003A           36                     LCALL   DISP                    ;顯示AD轉換結果
0038 80D8             37                     SJMP    WAIT
                      38     
003A E530             39     DISP:   MOV             A,LED_0                 ;數碼顯示子程序
003C 93               40                     MOVC    A,@A+DPTR
003D C2A3             41                     CLR             P2.3
003F F580             42                     MOV             P0,A
0041 12005F           43                     LCALL   DELAY
0044 D2A3             44                     SETB    P2.3
                      45     
0046 E531             46                     MOV             A,LED_1
0048 93               47                     MOVC    A,@A+DPTR
0049 C2A2             48                     CLR             P2.2
004B F580             49                     MOV             P0,A
004D 12005F           50                     LCALL   DELAY
0050 D2A2             51                     SETB    P2.2
                      52     
0052 E532             53                     MOV             A,LED_2
0054 93               54                     MOVC    A,@A+DPTR
0055 C2A1             55                     CLR             P2.1
0057 F580             56                     MOV             P0,A
0059 12005F           57                     LCALL   DELAY
005C D2A1             58                     SETB    P2.1
A51 MACRO ASSEMBLER  ADC0809_BASIC                                                        08/01/2006 10:17:06 PAGE     2

005E 22               59                     RET
                      60     
005F 7E0A             61     DELAY:  MOV             R6,#10                  ;延時5毫秒
0061 7FFA             62     D1:             MOV             R7,#250
0063 DFFE             63                     DJNZ    R7,$
0065 DEFA             64                     DJNZ    R6,D1
0067 22               65                     RET
                      66     
0068 3F065B4F         67     TABLE:  DB              3FH,06H,5BH,4FH,66H
006C 66                      
006D 6D7D077F         68                     DB              6DH,7DH,07H,7FH,6FH
0071 6F                      
                      69                     END
A51 MACRO ASSEMBLER  ADC0809_BASIC                                                        08/01/2006 10:17:06 PAGE     3

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


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

ADC. . . . . . . .  N NUMB   0035H   A   
B. . . . . . . . .  D ADDR   00F0H   A   
D1 . . . . . . . .  C ADDR   0061H   A   
DELAY. . . . . . .  C ADDR   005FH   A   
DISP . . . . . . .  C ADDR   003AH   A   
EOC. . . . . . . .  B ADDR   00B0H.1 A   
LED_0. . . . . . .  N NUMB   0030H   A   
LED_1. . . . . . .  N NUMB   0031H   A   
LED_2. . . . . . .  N NUMB   0032H   A   
OE . . . . . . . .  B ADDR   00B0H.0 A   
P0 . . . . . . . .  D ADDR   0080H   A   
P1 . . . . . . . .  D ADDR   0090H   A   
P2 . . . . . . . .  D ADDR   00A0H   A   
P3 . . . . . . . .  D ADDR   00B0H   A   
ST . . . . . . . .  B ADDR   00B0H.2 A   
START. . . . . . .  C ADDR   0000H   A   
TABLE. . . . . . .  C ADDR   0068H   A   
WAIT . . . . . . .  C ADDR   0012H   A   


REGISTER BANK(S) USED: 0 

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