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.

Protel99库_ALTERA Cyclone-Library _ALTERA CycloneII Protel99

Protel99库 Altera_Cyclone_-Protel99 Library Altera_Cyclone_III