In SX Microcontrollers, SX/B Compiler and SX-Key Tool, originator99 wrote: Update:: Bean, I discovered something. The only test I have been using for the resonators is the code posted above which is a serial Rx program. I have another Sx doing the Tx, and the code works fine on the internal 4mhz. It does not work using any variation of resonators and directives. I just did a test with a program that does nothing but blink an led, and the program runs fine on the 4mhz resonator, so now my problem really is that the serial Rx doesn't work when using the resonator. The Tx chip is using internal osc. I'll test having the resontaor on both Tx and Rx tomorrow. ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=143298#m143474 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)