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Altera_Forum's avatar
Altera_Forum
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15 years ago

Quartus II simulator

Dear expert,

Does anyone know how to set the timescale in Quartus II simulator?

Let say by default Quartus II timescale is set to 1ps. I intended to change the timescale to 1ns. Is it possible to do it? How?

Anyone help would be greatly appreciated....Thank you very much.....

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    13 years ago

    eeeh nobody loves you, davchang.it took 3 years for someone to answer you.

    in verilog hdl

    its `timescale 1 ps / 1 ps

    for example

    i have changed so that modelsim will think that all the simulation will happen in 1 nanosecond timespace and the precision of simulation (simulation step) will be 10ps.

    if you want to increase simulation detalisation,precision, make 1ps instead of 10ps.

    `timescale 1ns / 10ps

    module(signal,clock,out)

    //some code here

    endmodule
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    13 years ago

    Alternatively you can compile the code with:

    Modelsim:

    vlog -work work -timescale " 1 ns / 1 ps" YOURFILE.v

    Synopsys VCS:

    vlogan -timescale=1ns/10ps YOURFILE.v

    Xilinx:

    vlogcomp -timescale=1ns/10ps YOURFILE.v

    Aldec:

    vlog -work work -timescale 1ns/1ps YOURFILE.v

    Best Regards