m4-3.lst

单片机的几个应用设计程序源代码

                       Input  Filename : M4-3.asm
                       Output Filename : M4-3.obj


    1          0000            	NH	EQU  0H
    2          00E0            	NL	EQU  E0H
    3          00E0            	WIDTH	EQU  E0H
    4          00FA            	CLOCK	EQU  250
    5                          	
    6   0000                   		ORG  0H
    7   0000   01 0D           		AJMP START
    8   000B                   		ORG  0BH
    9   000B   01 35           		AJMP TIMER
   10                          	
   11   000D   75 89 01        	START:	MOV  TMOD,#00000001B
   12   0010   75 8A E0        		MOV  TL0,#NL
   13   0013   75 8C 00        		MOV  TH0,#NH
   14   0016   AA 8A           		MOV  R2,TL0
   15   0018   AB 8C           		MOV  R3,TH0
   16   001A   C2 D5           		CLR  F0
   17   001C   D2 AF           		SETB EA
   18   001E   D2 A9           		SETB ET0
   19   0020   D2 90           		SETB P1.0
   20   0022   79 02           		MOV  R1,#02H
   21   0024   7C FA           		MOV  R4,#CLOCK
   22                          	
   23   0026   74 00           		MOV  A,#0H
   24   0028   90 00 6B        		MOV  DPTR,#PULSE
   25   002B   93              		MOVC A,@A+DPTR
   26   002C   FD              		MOV  R5,A
   27   002D   74 01           		MOV  A,#01H
   28   002F   93              		MOVC A,@A+DPTR
   29   0030   FE              		MOV  R6,A
   30                          	
   31   0031   D2 8C           		SETB TR0
   32   0033   01 33           		AJMP $
   33                          	
   34   0035   C2 90           	TIMER:	CLR  P1.0
   35   0037   C2 8C           		CLR  TR0
   36   0039   8A 8A           		MOV  TL0,R2
   37   003B   8B 8C           		MOV  TH0,R3
   38   003D   D9 29           		DJNZ R1,X1
   39   003F   C3              		CLR  C
   40   0040   ED              		MOV  A,R5
   41   0041   94 01           		SUBB A,#01H
   42   0043   FD              		MOV  R5,A
   43   0044   EE              		MOV  A,R6
   44   0045   94 00           		SUBB A,#00H
   45   0047   FE              		MOV  R6,A
   46   0048   4D              		ORL  A,R5
   47   0049   70 04           		JNZ  TEST

   48   004B   C2 A9           		CLR  ET0
   49   004D   01 6A           		AJMP OUT
   50   004F   79 02           	TEST:	MOV  R1,#02H
   51   0051   20 D5 12        		JB  F0,X2
   52   0054   74 E0           		MOV  A,#WIDTH
   53   0056   25 8A           		ADD  A,TL0
   54   0058   F5 8A           		MOV  TL0,A
   55   005A   FA              		MOV  R2,A
   56   005B   E5 8C           		MOV  A,TH0
   57   005D   34 00           		ADDC A,#00H
   58   005F   F5 8C           		MOV  TH0,A
   59   0061   FB              		MOV  R3,A
   60   0062   DC 02           		DJNZ R4,X2
   61   0064   D2 D5           		SETB F0
   62   0066   D2 90           	X2:	SETB P1.0
   63   0068   D2 8C           	X1:	SETB TR0
   64   006A   32              	OUT:	RETI
   65   006B   07D0            	PULSE	DW 2000
   66   006D                   		END



           Lines Assembled :  66             Assembly Errors :  0