Cannot simulate IP Core: "altera_s10fpdsp_block_191" in "ModelSim - INTEL FPGA STARTER EDITION 10.6d" Error message: Instantiation of 'fourteennm_fp_mac' failed. The design unit was not found. - Cannot simulate IP Core: "altera_s10fpdsp_block_191" in "ModelSim - INTEL FPGA STARTER EDITION 10.6d" Error message: Instantiation of 'fourteennm_fp_mac' failed. The design unit was not found. I'm currently working on a design where two floating point numbers are multiplied on a Intel Stratix 10mx board. I use the Quartus Prime 19.2.0 software. I use the IP Core called "Native Floating Point DSP Intel Stratix " to utilize the Floating Point DSP block. The flow summery report shows that the DSP is utilized. I use the "Generate Simulator Setup Script For IP" tool in Quartus to export the simulation files for ModelSim. When I run the simulation script in ModelSim it fails with the following error message: "# ** Error: (vsim-3033) IP_CORE/FLOATMULT/altera_s10fpdsp_block_191/sim/FLOATMULT_altera_s10fpdsp_block_191_tyeomfq.sv(34): Instantiation of 'fourteennm_fp_mac' failed. The design unit was not found." FLOATMULT is the name which I gave the IP Core. I have included the library of the IP core. The following is the libraries which I have included: "library IEEE; use IEEE.std_logic_1164.all; use IEEE.numeric_std.all; library altera_s10fpdsp_block_191; use altera_s10fpdsp_block_191.all; library work; use work.types.all;" I have searched for solutions, but have not been able to find one. ModelSIm was installed together with Quartus hence I expect the libraries to be up to date. Does anyone have an idea of what is failing? Replies: Re: Cannot simulate IP Core: "altera_s10fpdsp_block_191" in "ModelSim - INTEL FPGA STARTER EDITION 10.6d" Error message: Instantiation of 'fourteennm_fp_mac' failed. The design unit was not found. I have now solved the issue. In the simulaion.do file I added the following command when running the simulation: vsim -L altera_s10fpdsp_block_191 -L fourteennm -t ns testbench The fourteennm library was not loaded during the simulation which caused the error.