Why does alt_signaltap_run fail in MATLAB? - Why does alt_signaltap_run fail in MATLAB? Description When alt_signaltap_run is run under MATLAB™, an "Assertion failed" pop-up window is displayed and MATLAB crashes when the pop-up is dismissed. Resolution For Quartus® II software versions 12.1 to 13.0 there is no workaround. For Quartus II software version 13.1 the following workaround is available: Copy <your quartus install path>\bin\ alt_signaltap_run.dll <your quartus install path> \bin\alt_signaltap_run.mexw32 Copy <your quartus install path>\bin64\ alt_signaltap_run.dll <your quartus install path> \bin\alt_signaltap_run.mexw64 Open a DOS command window at <your quartus install path>\dsp_builder and enter "PATH=<your quartus install path>\bin;<your quartus install path>\bin64;%PATH% In the same DOS command window, start Matlab by entering: <your quartus install path>\dspba\dsp_builder.bat -m "<your Matlab install path>/bin/matlab.exe" In Matlab, enter " addpath <your quartus install path>\quartus\bin" or " addpath <your quartus install path>\quartus\bin64" as appropriate. Then run "alt_signaltap_run" as normal. Steps 1 & 2 need only be executed once, and steps 3-6 need to be executed each time you wish to run Matlab with DSP Builder. This issue is scheduled to be fixed in a future version of the Quartus II software. Related Articles Why do I get errors when running the alt_signaltap_run function in MATLAB? Custom Fields values: ['novalue'] Troubleshooting novalue False ['DSP'] ['FPGA Dev Tools Quartus II Software'] novalue 12.1 ['Arria® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']