p11_1.asm

单片机原理与应用实例教程 单片机原理与应用实例教程

		ORG		0000H
		LJMP	MAIN

		ORG		000BH
		LJMP	INT_T0

		ORG		4100H
MAIN:	MOV DPTR, #TAB
		MOV R7, #0
		MOV R0, #0
		MOV TMOD, #00000001B
		MOV TH0, #3CH
		MOV TL0, #0B0H
		SETB EA
		SETB ET0
		SETB TR0
LOOP:	MOV A, R0
		MOVC A, @A+DPTR
		MOV P2, A
		ACALL DELAY
		AJMP LOOP

INT_T0:	INC R7
		CJNE R7, #10, RETURN
		MOV R7, #0
		INC R0
		CJNE R0, #10, RETURN
		MOV R0, #0
RETURN:	MOV TH0, #3CH
		MOV TL0, #0B0H
		RETI

DELAY:  MOV R2, 0FFH
DL:		DJNZ R2, DL
		RET

TAB:	DB 40h, 4FH, 24H, 30H, 19H
		DB 12H, 02H, 78H, 00H, 10H

		END