How do I disable the scrambler for PCI Express simulations?

Description

To disable scrambling in PCI Express® simulations do the following:

1. Open <work_dir>/<variant>/testbench/<variant>_tb/simulation/submodules/
altpcie_tbed_sv_hwtcl.v.
2. Search for the string, test_in.
3. To disable the scrambler, set test_in[2] = 1.
4. Save altpcie_tbed_sv_hwtcl.v.

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