Honored ContributorI'm using Quartus II 7.2 Web and ModelSim-Altera Edition.
when i simulate the project, I use Quartus Simulator. But it is inconvinient. I want to simulate each module without changing top-entity module. Does anyone know how ? plz helpme. i don't care whether using quartus simulator or modelsim.
Honored ContributorHello,
with Modelsim functional simulation, a Testbench can instantiate any module you want as DUT and optionally additional modules to model external hardware, e. g. RAM connected to your system or external data sources. Regards, FrankHonored ContributorThanks FvM. I'll try that.
I have another question, you said i can simulate any modules in the modelsim functional simulation. So, can i do that in timing simulation?Honored ContributorHello,
timing simulation can only be performed on gate level netlists and are valid for an individual placed and routed design. In a gate level netlist, the module hierarchy visible at the source level doesn't exist any more. You have to set a module as top-level entity and recompile the project to perform a ModelSim timing simulation on this module, the same as with Altera simulator. This could be meaningful if the modules internal timing has a significant impact on the designs total timing, or if you want to get typical performance data. But you should be aware, that final designs place and route could change a lot. Regards, Frank
