In SX Microcontrollers, SX/B Compiler and SX-Key Tool, johncouture wrote: Interesting. I would have never thought of that. I was using OSCXT2. I tried OSCXT1 and it worked! Robert you're a genius! Thank you! I don't know why it worked but at least I know where to start looking. For others following this thread, these settings are on page 49 of the SX-Key Development System Manual http://www.parallax.com/dl/docs/prod/sx/SXKeyMan2_0.pdf OSCXT1 - Normal Crystal/Res, 32khz to 10mhz OSCXT2 - Normal Crystal/Res, 1mhz to 24mhz OSCHS1 - High Speed Crystal/Res, 1mhz to 50mhz OSCHS2 - High Speed Crystal/Res, 1mhz to 50mhz ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=251728#m251785 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2008 (http://www.dotNetBB.com)