While I was using the device driver code for RL4 then it was working fine ,but while it has to be used with C100 then not PciFindDevice() is returning -1 and pciDevNo is being shown as 0.But if I am calling PciDeviceShow before PciFinddevice(which is not desired) then it PciFindDevice() works properly.What may be the problem,please tell me.