In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Brian218 wrote: Thanks Mark, I don't have a 4 MHz XTAL, but I just went to the device selection (under the run header) and changed the Oscillator to "4 MHz internal" and loaded the program; that seems to fix the problem, so your thought about the resonator appears to be correct. I have all RB pins connected to LEDs; it runs way to fast to see the individual LEDs blink on/off, but since the program loops continually, all LEDs appear on. Thanks again, I appreciate your suggestions B- ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=323069#m323092 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2009 (http://www.dotNetBB.com)