In SX Microcontrollers, SX/B Compiler and SX-Key Tool, sealyon wrote: Yes, you can use SX Sim to program in both ASM and SX/B without hardware. I've been doing that for the past month or so and it works fine. Actually, it is a nice system to learn on since the debugging facilities are a bit more powerful in SXSim then in the actual hardware. And, of couse, it is totally FREE! I'm not sure why you are having problems with SX Sim, it has been working fine for me. However, I do believe the version that installs with the IDE is an older version. You should download the latest version from the SX Sim topic here in the forum. To install all you have to do is copy the files into the 'Program Files\Parallax Inc\SX-Key v3.2\Tools\SXSim' folder. There are also some things which don't work in SXSim, but most of these are related to the Watchdog timer and the Timers in the SX48/SX52. I would try uninstalling the IDE and re-installing and then copy over the latest SXSim files into the Tools folder and see if that gets it back running for you. Chris ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=172956#m173010 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2007 (http://www.dotNetBB.com)