test_timer.asm

1 hour timer using mode 1 o timer in 89c51

			ORG 0000H
			LJMP MAIN
		;	ORG 0003H
		;	LJMP EX0
		;	ORG 000BH
		;	LJMP T0
		;	ORG 0013H
		;	LJMP EX1
		;	ORG 001BH
		;	LJMP T1
			ORG 0030H
MAIN:		MOV TMOD,#00000001B
			MOV TL0,#00H
			MOV TH0,#00H
			MOV R1,#255
AGAIN1:		MOV R2,#216
AGAIN:		SETB TR0
HERE:		JNB TF0,HERE
			CLR TF0
			DJNZ R2,AGAIN
			DJNZ R1,AGAIN1
			NOP
			END