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WHAT IS MODELSIM SOFTWARE
WHAT IS MODELSIM CODE
WHAT IS MODELSIM WINDOWS

restart -f : restarts the simulation so new signals that you added will have values.do C:/julie/wave.do : recreates all of the waveforms that you made earlier.do testbench_run_msim_rtl_verilog.do : recompiles the simulation files that Quartus created.All of the commands below can be run through the transcript window It is useful though, if you are adding new modules, to just have Quartus automatically link everything up. Example path: “C:\julie\simulation\modelsim\testbench_run_msim_rtl_verilog.do”.īy doing this you don’t need to recompile Quartus and run Modelsim, you can just continually edit this file and run more ModelSim simulations. Quartus automatically generates these, and you can play around with it. The real power of Modelsim lies in your ability to create. Hit the save button (top left) and you can save it for later. So you’ve made a beautifully formatted waveform.Colors! Right click signal > Properties > Wave Color Colors…> Apply.Right click signal > Format > Analog (custom/automatic) Right click signal in the Wave panel > Radix > select what you want Represent a value as signed, unsigned, hex, ascii, and more.Right click in gray area of the Wave panel. Tip: Insert Dividers between signals to keep track of multiple modules.You can expand any multiple bit signal to look at a particular bit.Drag and drop signals into the wave panel By selecting a signal, you can see all of the internal signals in the “Objects” panel. In the Panel “sim” you can see all of the modules you have in your test bench.These are just a few of the things you can do with ModelSim Modelsim is a powerful tool that can be used at multiple levels. Settings Page after you have set up your testbenchĪdding the testbench module and.

WHAT IS MODELSIM WINDOWS

One day if you work for a company that cares you can have multiple licences and thus multiple Model-Sim windows running at once

ModelSim won’t open! You can only have one instance of ModelSim open at a time on the university license.

Make sure the path to ModelSim-Altera is valid on your machine! Example path: C:/altera/10.0/modelsim_ase/win32aloem

WHAT IS MODELSIM SOFTWARE

Nativelink Error: “Can’t launch the ModelSim-Altera software - the path to the location of the executables for the ModelSim- Altera software were not specified or the executables were not found at specified path”.

Double check that you have applied the changes that you made with the testbench setup.

Then click Tools > Run EDA Simulation Tools > EDA RTL Simulation

Set your module as the top level module, compile.

testbench)Īdd the file containing your testbench module. Select Compile testbench: name of the top level module (e.g.

Assignments > Settings > EDA Tool Settings > Simulationįormat for output netlist: The language you wrote the testbench in.

I like to put in some form of index that correlates with clock ticks.

Modelsim can only simulate modules that you have the verilog files for.

M4K blocks are simulated as having registered outputs.

Create inputs for the device under test (DUT), usually reset, play, input(s), output(s), etc.

Since testbenches are usually not synthesized, you can use initial blocks.

Note you can never have a resolution that is lower than the length of the tick though

If you want to speed up your simulation, make the resolution lower.

Because of `timescale 1ns/ 1ps, max precision of 1ps, or.

Because of `timescale 1ns /1ps, #22 will be translated to 22 ns.

timescale indicates what the length of a “tick” is and the resolution of “ticks”.

Some key components of a testbench module:.

Step 1: Write a Testbench in Verilog/VHDL I have tried to only include what is useful. If you want more tips and tricks read the additional comments. The main points are underlined and numbered. This is a quick and dirty guide to getting modelsim working with Quartus.

WHAT IS MODELSIM CODE

Modelsim is a powerful tool used to simulate Verilog or VHDL code that you have written. The Quick and Dirty Guide to Using ModelSim with Quartus - Julie Wang 2014