In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Electronegativity wrote: It is possible to damage the SX key in a way that causes exactly this problem. I have done it twice already. :sad: If you put voltage onto one of the oscillator inputs of the SX key it will break in exactly the way you describe. It will program and read but debug just says "running" and can't do anything else. If you plug in the SX key so that only 3 of the header pins go into the socket this will happen. ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=132602#m132851 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2006 (http://www.dotNetBB.com)