8051 Program – count external interrupt

; count external interrupt
; count number of interrupts arriving on
; external interrupt pin INT1.
; Stop when counter overflows and disable the interrupt.
; Give the indication on pinP0.0
	ORG 0H
	MOV R2, #00H
	MOV IE, #84H
HERE:	SJMP HERE

	ORG 0013H
	INC R2
	CJNE R2, #00H, OUT
	MOV IE, #00H
	CLR P0.0
OUT:	RETI
	END

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List of topics: 8051

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