Altera Arria V GZ Avalon-ST Manual do Utilizador descarregar pdf (Página 18)

Generating the Testbench

1. On the Generate menu, select Generate Testbench System. Specify the parameters listed in the

following table.

Table 2-1: Parameters to Specify on the Generation Tab in Qsys

Parameter Value

Testbench System

Create testbench Qsys system Standard, BFMs for standard Qsys interfaces

Create testbench simulation model Verilog

Allow mixed-language simulation Turn this option off

Output Directory

Testbench <working_dir>/pcie_de_gen1_x8_ast128/testbench

2. Click the Generate button at the bottom of the Generation tab to create the testbench.

Note:

Simulating the Example Design

1. Start your simulation tool. This example uses the ModelSim

software.

2. From the ModelSim transcript window, in the testbench directory type the following commands:

a. do msim_setup.tcl

b. ld_debug (This command compiles all design files and elaborates the top-level design without any

optimization.)

c. run -all

The simulation includes the following stages:

• Link training

• Configuration

• DMA reads and writes

• Root Port to Endpoint memory reads and writes

Disabling Scrambling to Interpret TLPs at the PIPE Interface

1. Go to <project_directory/<variant>/testbench/<variant>_tb/simulation/submodules/.

2. Open altpcietb_bfm_top_rp.v.

3. Locate the declaration of test_in[2:1]. Set test_in[2] = 1 and test_in[1] = 0. Changing

test_in[2] = 1 disables data scrambling on the PIPE interface.

4. Save altpcietb_bfm_top_rp.v.

2-4

Generating the Testbench

UG-01127_avst

2014.12.15

Altera Corporation

Getting Started with the Arria V GZ Hard IP for PCI Express

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Altera Arria V GZ Avalon-ST Manual do Utilizador Página 18