; в режиме capture 

cseg at 0h
	jmp main
cseg at 0bh
	jmp intt0
cseg at 0030h
main:
	MOV TMOD, #01DH
	MOV TH0, #0FFH
	MOV TL0, #0FFH
	SETB TR1
	SETB ET0
	SETB EA
	SETB TR0
	SETB IT0
cycle: 
	SJMP cycle
intt0:
	MOV P1, TH1
	MOV P2, TL1
	MOV TH1, #00H
	MOV TL1, #00H
	MOV TH0, #0FFH
	MOV TL0, #0FFH
	RETI
END