Error (272006): LPM_WIDTHU parameter has been set to illegal value 4, but should be set to value 5. - Error (272006): LPM_WIDTHU parameter has been set to illegal value 4, but should be set to value 5. Description The above error will be seen when compiling the Cyclone® V Avalon-MM Hard IP for PCI®Express in Root Port configuration. This error is related to an issue with the Quartus® II software. Resolution Open the file altpciexpav_stif_cr_rp.v and change the parameter lpm_widthu from 4 to 5. from .lpm_widthu(4), to .lpm_widthu(5), This problem is fixed in version 15.0.1 and later of the Quartus II software IP. Custom Fields values: ['novalue'] Troubleshooting novalue True ['novalue'] ['FPGA Dev Tools Quartus II Software'] 15.0.1 15.0 ['Cyclone® V GT FPGA', 'Cyclone® V GX FPGA', 'Cyclone® V ST FPGA', 'Cyclone® V SX FPGA'] ['novalue'] ['novalue'] ['novalue']