(...intrigued, so he ventures out on a limb....)
Those are boolean values I assume? Or is there a way to measure analog levels on those inputs?

BTW: I was reading on /. about old bbs' when I came across this link and who do you suppose is the first name on the list, but our own Mr. Fiennes. I think I'd heard that bit of trivia somewhere, but wouldn't have been able to recall it. Boy, it is a small world when you're leaving foot prints around isn't it?