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

TIM		EQU 30H 
CNTA	EQU 31H 
CNTB	EQU 32H 
  
		ORG 00H 
		LJMP START 
		ORG 0BH 
		LJMP T0X 
		ORG 30H 
START:	MOV TIM,#00H 
		MOV CNTA,#00H 
		MOV CNTB,#00H 
		MOV TMOD,#01H 
		MOV TH0,#(65536-1000)/256 
		MOV TL0,#(65536-1000) MOD 256 
		SETB TR0 
		SETB ET0 
		SETB EA 
		SJMP $ 
  
T0X:	
		MOV TH0,#(65536-1000)/256 
		MOV TL0,#(65536-1000) MOD 256 
		MOV DPTR,#TAB 
		MOV A,CNTA 
		MOVC A,@A+DPTR 
		MOV P3,A 
		MOV DPTR,#DIGIT 
		MOV A,CNTB 
		MOV B,#8 
		MUL AB 
		ADD A,CNTA 
		MOVC A,@A+DPTR 
 	    MOV P1,A 
		INC CNTA 
		MOV A,CNTA 
		CJNE A,#8,NEXT 
		MOV CNTA,#00H 
NEXT:	INC TIM 
		MOV A,TIM 
		CJNE A,#250,NEX 
		MOV TIM,#00H 
		INC CNTB 
		MOV A,CNTB 
		CJNE A,#10,NEX 
		MOV CNTB,#00H 
NEX:	RETI 
		
TAB:	DB 0FEH,0FDH,0FBH,0F7H,0EFH,0DFH,0BFH,07FH 
DIGIT:	DB 00H,00H,3EH,41H,41H,41H,3EH,00H 
		DB 00H,00H,00H,00H,21H,7FH,01H,00H 
		DB 00H,00H,27H,45H,45H,45H,39H,00H 
		DB 00H,00H,22H,49H,49H,49H,36H,00H 
		DB 00H,00H,0CH,14H,24H,7FH,04H,00H 
		DB 00H,00H,72H,51H,51H,51H,4EH,00H 
		DB 00H,00H,3EH,49H,49H,49H,26H,00H 
		DB 00H,00H,40H,40H,40H,4FH,70H,00H 
		DB 00H,00H,36H,49H,49H,49H,36H,00H 
		DB 00H,00H,32H,49H,49H,49H,3EH,00H 
		END