In SX Microcontrollers, SX/B Compiler and SX-Key Tool, JonnyMac wrote: The SX/B help file is not intended to explain the architectural differences between the SX28 and SX48 -- the documentation exists and it is the responsibility of the SX programmer to be familiar with it. The help file also suggests that you should use the ST_B and ST_C registers for the SX28 (i.e., for SCHMITT). That said, I am updating the help file for Parallax and will add an additional note vis-a-vis the CMOS, SCHMITT, and TTL instructions and the SX20/28 ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=329808#m329819 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)