PCI IP核功能实现，符合V2.2协议-realize pci function

PCI-ip硬件描述语言-开源的，可以做参考设计，如果需要的话，-This models are written in VHDL! Author is Ovidiu Lupas! MASTER model generates PCI compliant signals checks Target signal compliance with PCI checks data received from Target for correctness generates