digital voltmeter.lst

Proteus在MCS-51％26ARM7系统中的应用百例 Proteus在MCS-51％26ARM7系统中的应用百例

A51 MACRO ASSEMBLER  DIGITAL_VOLTMETER                                                    08/01/2006 11:31:15 PAGE     1


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

LOC  OBJ            LINE     SOURCE

  0030                 1     LED_0   EQU     30H
  0031                 2     LED_1   EQU     31H
  0032                 3     LED_2   EQU     32H                             ;存放段码
  0035                 4     ADC             EQU             35H
  00A4                 5     CLOCK   BIT             P2.4                    ;定义ADC0808时钟位
  00A5                 6     ST              BIT     P2.5
  00A6                 7     EOC     BIT     P2.6
  00A7                 8     OE              BIT     P2.7
                       9     
0000                  10                     ORG     00H
0000 800C             11                     SJMP    START
000B                  12                     ORG             0BH
000B 020050           13                     LJMP    INT_T0
                      14     
000E 753000           15     START:  MOV             LED_0,#00H
0011 753100           16                     MOV             LED_1,#00H
0014 753200           17                     MOV             LED_2,#00H
0017 900081           18                     MOV             DPTR,#TABLE             ;段码表首地址
001A 758902           19                     MOV             TMOD,#02H
001D 758CF5           20                     MOV             TH0,#245
0020 758A00           21                     MOV             TL0,#00H
0023 75A882           22                     MOV             IE,#82H
0026 D28C             23                     SETB    TR0
                      24     
0028 C2A5             25     WAIT:   CLR     ST                              
002A D2A5             26                     SETB    ST
002C C2A5             27                     CLR     ST                              ;启动AD转换
002E 30A6FD           28                     JNB     EOC,$                   ;等待转换结束
0031 D2A7             29                     SETB    OE 
0033 859035           30                     MOV     ADC,P1                  ;读取AD转换结果
0036 C2A7             31                     CLR     OE              
0038 E535             32                     MOV     A,ADC
003A 75F064           33                     MOV     B,#100                  ;AD转换结果转换成BCD码
003D 84               34                     DIV     AB
003E F532             35                     MOV     LED_2,A
0040 E5F0             36                     MOV     A,B
0042 75F00A           37                     MOV     B,#10
0045 84               38                     DIV     AB
0046 F531             39                     MOV     LED_1,A
0048 85F030           40                     MOV     LED_0,B
004B 120053           41                     LCALL   DISP
004E 80D8             42                     SJMP    WAIT
                      43     
0050 B2A4             44     INT_T0: CPL             CLOCK                   ;提供ADC0808时钟信号
0052 32               45                     RETI
                      46     
0053 E530             47     DISP:   MOV             A,LED_0                 ;显示子程序
0055 93               48                     MOVC    A,@A+DPTR
0056 C2A3             49                     CLR             P2.3
0058 F580             50                     MOV             P0,A
005A 120078           51                     LCALL   DELAY
005D D2A3             52                     SETB    P2.3
                      53     
005F E531             54                     MOV             A,LED_1
0061 93               55                     MOVC    A,@A+DPTR
0062 C2A2             56                     CLR             P2.2
0064 F580             57                     MOV             P0,A
0066 120078           58                     LCALL   DELAY
A51 MACRO ASSEMBLER  DIGITAL_VOLTMETER                                                    08/01/2006 11:31:15 PAGE     2

0069 D2A2             59                     SETB    P2.2
                      60     
006B E532             61                     MOV             A,LED_2
006D 93               62                     MOVC    A,@A+DPTR
006E C2A1             63                     CLR             P2.1
0070 F580             64                     MOV             P0,A
0072 120078           65                     LCALL   DELAY
0075 D2A1             66                     SETB    P2.1
0077 22               67                     RET
                      68     
0078 7E0A             69     DELAY:  MOV             R6,#10                  ;延时5毫秒
007A 7FFA             70     D1:             MOV             R7,#250
007C DFFE             71                     DJNZ    R7,$
007E DEFA             72                     DJNZ    R6,D1
0080 22               73                     RET
                      74     
0081 3F065B4F         75     TABLE:  DB              3FH,06H,5BH,4FH,66H
0085 66                      
0086 6D7D077F         76                     DB              6DH,7DH,07H,7FH,6FH
008A 6F                      
                      77                     END
A51 MACRO ASSEMBLER  DIGITAL_VOLTMETER                                                    08/01/2006 11:31:15 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   
CLOCK. . . . . . .  B ADDR   00A0H.4 A   
D1 . . . . . . . .  C ADDR   007AH   A   
DELAY. . . . . . .  C ADDR   0078H   A   
DISP . . . . . . .  C ADDR   0053H   A   
EOC. . . . . . . .  B ADDR   00A0H.6 A   
IE . . . . . . . .  D ADDR   00A8H   A   
INT_T0 . . . . . .  C ADDR   0050H   A   
LED_0. . . . . . .  N NUMB   0030H   A   
LED_1. . . . . . .  N NUMB   0031H   A   
LED_2. . . . . . .  N NUMB   0032H   A   
OE . . . . . . . .  B ADDR   00A0H.7 A   
P0 . . . . . . . .  D ADDR   0080H   A   
P1 . . . . . . . .  D ADDR   0090H   A   
P2 . . . . . . . .  D ADDR   00A0H   A   
ST . . . . . . . .  B ADDR   00A0H.5 A   
START. . . . . . .  C ADDR   000EH   A   
TABLE. . . . . . .  C ADDR   0081H   A   
TH0. . . . . . . .  D ADDR   008CH   A   
TL0. . . . . . . .  D ADDR   008AH   A   
TMOD . . . . . . .  D ADDR   0089H   A   
TR0. . . . . . . .  B ADDR   0088H.4 A   
WAIT . . . . . . .  C ADDR   0028H   A   


REGISTER BANK(S) USED: 0 


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