I am using the Accutron prototyping board with the ADuC841 controller to develop an application that converts voltages to power to display power, VSWR and temperature and displays the results on a 4 line LCD display. Everything was working ok and I was getting through the project quite happily writing code, downloading it and checking the result. After about two weeks of this I downloaded code and the display was blank. I pressed the reset and rubbish appeared on the screen. After repeated presses of the reset button eventually I got the correct display and from that point everything worked ok until either another reset or a download. It is as if, when resetting, it is not always vectoring to the correct location to start. Does anyone else have experience of this strange behaviour and why it should suddenly start after working ok initially?