esffffsfesfesf.asm

产生级数为4的M序列

      BUF0 EQU 2BH	   
      BUF1 EQU 2AH
      BUF2 EQU 28H
      BUF3 EQU 27H
      Y    EQU 25H
      Y0   EQU 24H      
      X0   BIT ACC.0
      X1   BIT ACC.1
      X2   BIT ACC.2
      X3   BIT ACC.3
      ORG 00H

       MAIN:	
       	        MOV  R0,#00H
		MOV  R1,#00H
		MOV  R3,#01H
	   	MOV A,P1
		CPL A
	        ANL A,#0FH
		MOV BUF0,A
        NEXT:	
		
                MOV C,X0
		JNB X1,NCEX
		CPL C
	NCEX:
		ANL A,#00EH
		JNZ DR
		CPL C	
	DR:
	  	RR A
		INC R0
		MOV X3,C
		MOV Y0,A
		CJNE R0,#04H,NEXT
		MOV R0,#00H
		INC R1
		CJNE R1,#01H,K1
		MOV BUF1,Y0
		ANL BUF1,#0FH
	K1:	CJNE R1,#02H, K2
		MOV BUF2,Y0
		ANL BUF2,#0FH
	K2:	CJNE R1,#03H, NEXT
	        
                
                

         
                MOV BUF3,Y0
	       
		MOV A,BUF0
                LCALL SHOW
		MOV A,BUF1
                LCALL SHOW
		MOV A,BUF2
                LCALL SHOW
                MOV A,BUF3
                LCALL SHOW
	        AJMP MAIN
       SHOW:	        
                MOV DPTR,#TAB1
                MOVC A,@A+DPTR
		MOV P0,A
		MOV P2,R3
                LCALL DELAY
		MOV A,R3
		RL A
		MOV R3,A
      DELAY: 	
                MOV R6,#2
         D1: 	
                MOV R7,#248
  		DJNZ R7,$
		DJNZ R6,D1
	   	RET	
		
		
 TAB1:
	DB        03FH;0
        DB        006H;1
        DB        05BH;2
        DB        04FH;3
        DB        066H;4
        DB        06DH;5
        DB        07DH;6
        DB        007H;7
        DB        07FH;8
        DB        06FH;9
        DB        077H;A
        DB        07CH;b
        DB        039H;C
        DB        05EH;d
        DB        079H;E
        DB        071H;F

		END


























BUF0 EQU 2BH	   
BUF1 EQU 2AH
BUF2 EQU 28H
BUF3 EQU 27H
DATE EQU 26H



COUNT0:
MOV BUF0,#0BH
MOV BUF1,#0EH
MOV BUF2,#01H
MOV BUF3,#02H
MOV R0,#00H
MOV R2,#01H
MOV R3,#10H
MOV R4,#00H
MOV R5,#00H
MOV R6,#00H
MOV R7,#00H
MOV A,BUF0
CPL A
ANL A,#00FH
MOV BUF0,A
MOV A,BUF1
CPL A
ANL A,#00FH
MOV BUF1,A
MOV A,BUF2
CPL A
ANL A,#00FH
MOV BUF2,A
MOV A,BUF3
CPL A
ANL A,#00FH
MOV BUF3,A
MOV A,BUF1
RL A
RL A
RL A
RL A
MOV R1,BUF0
ORL A,R1
MOV R1,#01H
BACK:
DJNZ R3,BEGIN
MOV A,R4
LCALL SHOW0
AJMP COUNT0
	
BEGIN:

 INC R0
CJNE R0,#05H,PQ
  MOV R0,#01H
  
CJNE R2,#01H, S1
INC R2
LCALL CHANGE1
	
S1:	CJNE R2,#02H,PQ
	 LCALL CHANGE2	 
PQ:	
   
    MOV 24H,A
   ANL A,#03H
   JZ COUNT
NEXT1:
   MOV A,24H
   
   RR A
  MOV R6,A
  JMP BACK
	

COUNT:

INC R4
MOV R7,A
MOV A,R5
XRL A,R3
JZ SUB1
L:
MOV 25H,R3
DEC R3
MOV A,R3
MOV R5,A
MOV R3,25H
MOV A,R7
SJMP  NEXT1
SUB1:
DEC R4
JMP L
CHANGE1:

RL A
RL A
RL A
RL A
ANL A,#0F0H
MOV R1,BUF2
ORL A,R1
 SWAP A
JMP	PQ
CHANGE2:
MOV A,R6
RL A
RL A
RL A
RL A
ANL A,#0F0H
MOV R1,BUF3
ORL A,R1
 SWAP A
 JMP PQ

SHOW0: 
        MOV DPTR,#TAB1
        MOVC A,@A+DPTR
		MOV P0,A
		MOV P2,#80H
        LCALL DELAY
		



 DELAY: 		MOV R5,#2
              D1:  MOV R6,#2
          	
              D2:  MOV R7,#2
  		DJNZ R7,$
		DJNZ R6,D1
		DJNZ R5,D2
	   	RET		
		
 TAB1:
	    DB        03FH;0
        DB        006H;1
        DB        05BH;2
        DB        04FH;3
        DB        066H;4
        DB        06DH;5
        DB        07DH;6
        DB        007H;7
        DB        07FH;8
        DB        06FH;9
        DB        077H;A
        DB        07CH;b
        DB        039H;C
        DB        05EH;d
        DB        079H;E
        DB        071H;F

		END




///////////////////////////////////


BUF0 EQU 2BH	   
BUF1 EQU 2AH
BUF2 EQU 28H
BUF3 EQU 27H
      Y    EQU 21H
      Y0   EQU 20H      
      X0   BIT ACC.0
      X1   BIT ACC.1
      X2   BIT ACC.2
      X3   BIT ACC.3
      ORG 00H
AJMP MAIN
ORG 23H
AJMP RSINT
ORG 30H


   MAIN:
   
   
   
   MOV SCON,#50H;设置成串口1方式
     MOV TMOD,#20H;波特率发生器T1工作在模式2上
     MOV PCON,#80H;波特率翻倍为2400x2=4800BPS
     MOV TH1,#0F9H;预置初值(按照波特率2400BPS预置初值)
     MOV TL1,#0F9H;预置初值(按照波特率2400BPS预置初值)
     SETB TR1;启动定时器T1
     SETB EA;以上完成通讯初始化设置
     SETB ES

   	
        MOV  R0,#00H
		MOV  R1,#00H
		MOV  R3,#01H
        MOV A,R5
		SETB P3^5
		JNB P3^5 ,REL
  		LCALL DELAY
	    JMP GO
 REL:	MOV A,P1
        CPL A
 GO: 
	   
		
	    ANL A,#0FH

		MOV BUF0,A
   NEXT:	
	    MOV C,X0
		JNB X1,NCEX
		CPL C
   NCEX:
		ANL A,#00EH
		JNZ DR
		CPL C	
	DR:
	  	RR A
		INC R0
		MOV X3,C
		MOV Y0,A
		CJNE R0,#04H,NEXT
		MOV R0,#00H
		INC R1
		CJNE R1,#01H,K1
		MOV BUF1,Y0
		ANL BUF1,#0FH
	K1:	CJNE R1,#02H, K2
		MOV BUF2,Y0
		ANL BUF2,#0FH
	K2:	CJNE R1,#03H, NEXT
        MOV BUF3,Y0
		JNB P3^6, COUNT0
		MOV A,BUF0
	
        LCALL SHOW
		MOV A,BUF1
	
        LCALL SHOW
		MOV A,BUF2
	
        LCALL SHOW
		MOV A,BUF3
	
        LCALL SHOW
        SJMP MAIN

RSINT:
        CLR RI
        MOV R5,SBUF  
	    RETI
RSINT1:	
 
	   
        MOV SBUF,A   
	   
	   LCALL	 DELAY
	    RETI