Why does my Arria 10 XAUI PHY NCSIM script load with a fatal error? - Why does my Arria 10 XAUI PHY NCSIM script load with a fatal error? Description Due to a problem in the Quartus® Prime software versions 17.0 and earlier, you might see the Quartus-generated NCSIM simulation scripts for the Arria® 10 XAUI PHY load with the the following fatal errors: ncelab: *F,CUMSTS: Timescale directive missing on one or more modules. ncelab: *F,NOSNAP: Snapshot 'xaui.xaui' does not exist in the libraries Resolution To work around this problem, perform the following steps: 1) Go to generated simulation model project directory below: <project_dir>/<instance_name>/altera_xcvr_xaui_1*/sim 2) Open "a10_xcvr_xaui.sv" in text editor. 3) Add time scale directive (eg: `timescale 1 ps / 1 ps) before model declaration. a. Look for line with "module a10_xcvr_xaui #(" b. Insert "`timescale 1 ps / 1 ps" in line before "module a10_xcvr_xaui #(". 4) Save "a10_xcvr_xaui.sv" 5) Navigate to <project_dir>/<instance_name>/sim/cadence 6) Run "nscim_setup.sh" using NCSIM simulator tool. This problem is scheduled to fixed in a future release of the Quartus Prime software. Custom Fields values: ['novalue'] Troubleshooting 464963 False ['Ethernet', 'XAUI PHY IP'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 17.1 14.1 ['Arria® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']