In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Chris Savage wrote: Hello, DDIR is probably data direction, as in the data direction register. LVL is probably level, maybe signal level, high/low. PLP is probably pullup, referring to the internal pullup resistors. ST I don't have a guess on. ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=86765#m86768 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2005 (http://www.dotNetBB.com)