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Altera_Forum
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14 years ago

# Invalid time string specified: in ModelSim

I'm using ModelSim Altera Starter Edition 6.6 for simulating some very simple designs. I started a new project, compiled and everything was ok. But when I had wanted to start simulation, I have opene...
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Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

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# Invalid time string specified

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If you are simulating Verilog, then try adding '-t ps' to the vsim command line to set the timescale to 1ps. You might also want to add something like

`timescale 1 ps / 1 ps

to your Verilog.

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What does ModelSim offer that Quartus couldn't handle?

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A programmable method of generating a testbench. Drawing stimulus waveforms works for only the simplest of testbenches.

Cheers,

Dave