Xilinx Spartan-3 FPGAs xc3s400 uClinux board has quite a complex structure, but such studies are rare on the web are in pdf format, circuit diagram, pcb drawings have Xilinx XC3S400 FPGA & XCF02SV020C Flash Platform 8MB Flash ROM 32MB... Electronics Projects, uClinux Xilinx Fpga Spartan Board "avr development board, " Date 2019/08/02