U.S. Patent Jun. 4, 2002 Sheet 7 of 8 US 6,401,154 B1 GPIRQO olarit 0 ngliuengo GPIRQ] 0 olarit l0 npmi_eng10 INTA polarityl 1 nmi_enbl 1 INTD nmi_out _> nmi (to CPU) m. “I.