I don't like the idea of banging directly on device registers if ACPI might think it's managing some other part of the device -- or the whole thing. Most SuperI/O and environmental sensor chips (and combinations thereof) these days include watchdog timers. I want to hook some of these up to /dev/watchdog but, if possible, I'd prefer to use the ACPI interface -- if there even is one. Can someone tell me if there is such a thing, if it's generaly implemented, and if so, where it's described? -- Thor Lancelot Simon tls%rek.tjls.com@localhost "All of my opinions are consistent, but I cannot present them all at once." -Jean-Jacques Rousseau, On The Social Contract