Thanks to Horst Herb of GNUMed for these links: ‘LEON is a synthesisable VHDL model of a 32-bit SPARC* compatible processor, developed by the European Space Agency (ESA) for future space missions. To promote the SPARC architecture and enable development of system-on-a-chip
(SOC) devices using SPARC cores, ESA is making the full source code freely available under the GNU LGPL license.’ For those of you who don’t know what SPARC is, it is the processor architecture Sun Microsystems uses for its machines. You can read more from its home page here as well as at EE Times and about more open hardware here.