> It's six in the morning, and I'm only half through my first cup > of mud, so it's entirely possible I may have missed a "bsf > status, rp0" somewhere; but I don't see it It's two in the morning, and I've just finished my last cup of mud. It is entirely possible you missed a bank set but you didn't 'cos there wasn't one http://home.clear.net.nz/pages/joecolquitt/davedong.html As you can see, there's now a definite sloping off of the event, and it lasts for just 45ms.The decrease in amplitude is not what you'd call stupendous but it's heading in the right direction. I'll play around with it some more. As the code and circuit is there, perhaps someone else might like to grab Dave's dong and have a go, compare notes Freakin' bank switching got me again. Are PICs the only micros that have this ? It is so much easier when you have contiguous addressing OK that's enough, I've put my 18 hours in for today -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body