To Richard and Daniele: I'm curious to see what your Makefile looks like. It appears your source files are correct. It's working fine for me, but that doesn't help you much. I'm using kernel 2.0.33 and the last release of gcc before 2.8.0 came out. -Colin Leister --- [rtl] --- For more information on Real-Time Linux see: http://rtlinux.cs.nmt.edu/