On Friday 13 May 2005 01:40 am, Wouter van Ooijen scribbled: > No enlightment, but note that I never got Wisp628 or PS+ (!) working on > the mianboard serial port of my PC. Both work flawlessly with an > usb-to-serial adapter. But the symptoms seem to be different from yours. One of the most common reasons I've seen for serial-port problems is that another device conflicts with it. Usually it was the other way around where someone had problems with an ISA/PCI modem since the motherboard com ports needed to be disabled, but perhaps this might be your problem in reverse? Cheers, -Neil. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist