8x8 lcd.asm

8951系列单片机仿真。包括流水灯、数码管、定时器、点阵、液晶等

				ORG 00H 
START:	NOP 
	MOV R3,#3 
LOP2:	MOV R4,#8 
	MOV R2,#0 
LOP1:	MOV P1,#0FFH 
	MOV DPTR,#TABA 
	MOV A,R2 
	MOVC A,@A+DPTR 
	MOV P3,A 
	INC R2 
	LCALL DELAY 
	DJNZ R4,LOP1 
	DJNZ R3,LOP2 
  
	MOV R3,#3 
LOP4:	MOV R4,#8 
	MOV R2,#7 
LOP3:	MOV P1,#0FFH 
	MOV DPTR,#TABA 
	MOV A,R2 
	MOVC A,@A+DPTR 
	MOV P3,A 
	DEC R2 
	LCALL DELAY 
	DJNZ R4,LOP3 
	DJNZ R3,LOP4 
  
	MOV R3,#3 
LOP6:	MOV R4,#8 
	MOV R2,#0 
LOP5:	MOV P3,#00H 
	MOV DPTR,#TABB 
	MOV A,R2 
	MOVC A,@A+DPTR 
		MOV P1,A 
	INC R2 
	LCALL DELAY 
	DJNZ R4,LOP5 
	DJNZ R3,LOP6 
  
	MOV R3,#3 
LOP8:	MOV R4,#8 
	MOV R2,#7 
LOP7:	MOV P3,#00H 
	MOV DPTR,#TABB 
	MOV A,R2 
	MOVC A,@A+DPTR 
	MOV P1,A 
	DEC R2 
	LCALL DELAY 
	DJNZ R4,LOP7 
	DJNZ R3,LOP8 
	LJMP START 
  
DELAY:	MOV R5,#10 
D2:	MOV R6,#20 
D1:	MOV R7,#248 
	DJNZ R7,$ 
	DJNZ R6,D1 
	DJNZ R5,D2 
	RET 
  
TABA:	DB 0FEH,0FDH,0FBH,0F7H,0EFH,0DFH,0BFH,07FH 
TABB:	DB 01H,02H,04H,08H,10H,20H,40H,80H 
	END