On Fri, May 8, 2009 at 8:26 PM, Myles Watson <mylesgw at gmail.com> wrote: > Is there some way that > the serial port could be misconfigured so that if you write to it too > quickly you overflow the buffer and lose output? it could be a hardware glitch actually. The code tests the tx ready bit and won't send until it is set. It's an interesting mystery. ron