In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Zoot wrote: Well, I would go with JonnyMac every time :-) he wrote the book... In any case: - if using external 4mhz resonator, is Key disconnected when you test? - if using Key for clock with resonator removed, you may need more than 4AA -- the key uses a bit of juice, esp if it's programming/debugging/generated clock It also sounds like your bs2 program works to receive the serial byte? What device is sending the byte? ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=264135#m264252 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)