According to a LinuxDevices news release the SSV Embedded Systems company has released the design of their DIL/NetPC ADNP/ESC1 Single Board Controller under the GNU GPL, allowing anyone to freely use the design. The 128 pin QIL board runs uClinux on an FPGA softcore and includes 8MB Flash, 16MB SDRAM, Ethernet, serial and parallel ports, 20 GPIO ports, general purpose timers, JTAG, an IDE/CF interface, and a 16bit expansion bus. The boards also come with uClinux and U-Boot. This might an interesting starting point for a GPL'd robot controller design.