experix started as PC only, but now (as of release r14, Nov. 12 2014) it is more general. It should run on any GNU-Linux system except probably big-endian architectures and those that need 64-bit pointers.
experix has been tested on a variety of PC's and on Raspberry Pi (www.raspberrypi.org). The file dist/hardware/tpad_setup in experix_r14_dist.tgz2 has details on setting up the Thinkpad X60 with Trisquel Linux from www.gluglug.org.uk and this is mostly applicable to the Raspberry Pi as well.