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I mean by "fail" that the outputs of the design aren't true.
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this doesn't really help...
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On Modelsim, in case of CYCLONE, pre-compiled simulation library of CYCLONE was required, in case of CYCLONEII, pre-compiled simulation library of CYCLONEII was required, and in case of CYCLONEIII, two pre-compiled simulation libraries were required (CYCLONEIII,ALTERA). For each case, i used the .vho and .sdo file of it.
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Do you have different warnings from Modelsim before it starts the simulation, when running for the Cyclone III? Warnings such as "Warning: No default binding for component: xxx" can meen it didn't find the correct component to instantiate from the libraries it has, and it will most probably give wrong simulation results.
Honored Contributor
