Creating and viewing datasets

Datasets allow you to view previous simulations or to compare simulations. To view a dataset, you must first save a ModelSim simulation to a WLF file (using the vsim -wlf command). Once you have saved a WLF file, you can open it as a view-mode dataset.

In this lesson you will compare two simple Verilog designs: a structural description and an RTL description of a 4-bit, binary counter. To begin, you will simulate the structural description and save it to a WLF file. Then you will simulate the RTL version. Finally, you will open the WLF file as a dataset and compare the two simulations in the Wave window.

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