In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bean wrote: Zoot, You can program and run WITH the resonator connected (but not with an external clock source like a TCXO or something active). If you try to DEBUG with a resonator, or with a frequency too high(110MHz I think) or too low (300KHz I think), all of the debugging buttons will be grayed out. Or you could have a defective SX-Key. Bean. ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=227991#m228000 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2007 (http://www.dotNetBB.com)