Hi, linux-image-rt-* seems to be a valid alternative to RTAI: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Debian_Wheezy_Linux-Rt_Compile_LinuxCNC Best regards, Carlo -- .-. | Registered Linux User #443882 | .''`. oo| | http://linuxcounter.net/ | : :' : /`'\ | Registered Debian User #9 | `. `'` (\_;/) | http://debiancounter.altervista.org/ | `-