count-ontime.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

SECOND	EQU 30H 
TCOUNT	EQU 31H 
	ORG 00H 
START:	MOV SECOND,#00H 
	MOV TCOUNT,#00H 
	MOV TMOD,#01H 
	MOV TH0,#(65536-50000) / 256 
	MOV TL0,#(65536-50000) MOD 256 
	SETB TR0 
DISP:	MOV A,SECOND 
	MOV B,#10 
	DIV AB 
	MOV DPTR,#TABLE 
	MOVC A,@A+DPTR 
	MOV P0,A 
	MOV A,B 
	MOVC A,@A+DPTR 
	MOV P2,A 
WAIT:	JNB TF0,WAIT 
	CLR TF0 
	MOV TH0,#(65536-50000) / 256 
	MOV TL0,#(65536-50000) MOD 256 
	INC TCOUNT 
	MOV A,TCOUNT 
	CJNE A,#20,NEXT 
	MOV TCOUNT,#00H 
	INC SECOND 
	MOV A,SECOND 
	CJNE A,#60,NEX 
	MOV SECOND,#00H 
NEX:	LJMP DISP 
NEXT:	LJMP WAIT 
TABLE:	DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH 
	END