Error (175001): Could not place Hard IP Error (10104): Unable to find a path between I/O pad and PINPERST port of PCI Express Hard IP. - Error (175001): Could not place Hard IP Error (10104): Unable to find a path between I/O pad and PINPERST port of PCI Express Hard IP. Description Quartus® II software reports this fitter error when you make an incorrect nPERSTL* pin to PCI Express Hard IP location assignment in Cyclone® V devices. Pin nPERSTL0 is associated with the upper left PCI Express(PCIe) Hard IP block, and nPERSTL1 is associated with the bottom left PCIe HIP block. Note: This mapping is opposite to that used by Stratix® V and Arria® V. Resolution To work around this problem modify the RTL as described below, or upgrade to Quartus II software version v13.1 Below are the steps to switch to Soft Reset Controller: 1) Open the .v file in which altpcie_cv_hip_ast_hwtcl is instantiated (e.g. ...\pcie_lib\top.v) 2) Search for the parameter hip_hard_reset_hwtcl and change its value to 0 (zero). 3) Disable pin_perst input port on the IP instance to hardwire pin_perst to 1’b1 (e.g. <project_dir>\top_hw.v). - Example: .pcie_rstn_pin_perst (1\'b1) 4) Keep driving npor input with original reset signal to reset the core and application logic. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] 13.1 novalue ['Cyclone® V FPGAs and SoCs', 'Cyclone® V GT FPGA', 'Cyclone® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']