比较全的ALTERA芯片的原理图和封装库(Protel99)，对需要画Altera FPGA PCB版图的同志很有用。-Comparing all the ALTERA chip schematic and footprint library (Protel99), on the need to draw Altera FPGA PCB layout comrades useful.

protel cyclone iii系列 原理图，PCB