10-6-3.asm

书籍8051入门篇

;10-6-3.ASM
$MOD51
MS10		EQU	-9217
TMH		EQU	(MS10)/256
TML		EQU	(MS10) MOD 256
RATE		EQU	(256-92)
;
		ORG	0000H
		LJMP	START
		ORG	000BH
		LJMP	T0_ISR
		ORG	001BH
		LJMP	T1_ISR
;	
START:		MOV	TMOD,#21H
		MOV	TH0,#TMH
		MOV	TL0,#TML
		SETB	TR0
		MOV	TH1,#RATE
		SETB	TR1
		SETB	ET0
		SETB	ET1
		SETB	EA
LOOP:		SJMP	LOOP
;	
T0_ISR:		CLR	TF0
		MOV	TH0,#TMH
		MOV	TL0,#TML
		RETI
;
T1_ISR:		CLR	TF1
		RETI
		END