Internal Error: Sub-system: PTI, File: /quartus/tsm/pti/pti_tdb_builder.cpp, Line: 1331 - Internal Error: Sub-system: PTI, File: /quartus/tsm/pti/pti_tdb_builder.cpp, Line: 1331 Description This error can be seen in the Intel® Quartus® Prime Pro Edition software version 21.4 and earlier when you use the following P-Tile PCI Express* IPs and connected the "pin_perst_n" to the core logics. P-Tile Avalon® Streaming Intel® FPGA IP for PCI Express* P-tile Avalon® Memory-mapped Intel® FPGA IP for PCI Express* Multi-Channel DMA Intel® FPGA IP for PCI Express* Resolution Due to the limitation of the Intel® FPGA P-Tile Hard IP for PCI Express*, no route resource from ''pin_perst_n'' to core logic exists. Do not attempt to directly connect "pin_perst_n" to the core logic RTL to work around this error . There is no planned fix for this issue. Custom Fields values: ['novalue'] Troubleshooting 15011297003 False ['Interfaces'] ['FPGA Dev Tools Quartus® Prime Software Pro'] No plan to fix 21.4 ['Agilex™ 7 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']