Applications 1: Diferență între versiuni
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== The Testbench Module == | == The Testbench Module == | ||
The testbench is a module used only in simulation for testing another module. It encloses the tested module (named DUT - Device Under Test) and generates the signals for the inputs of the DUT. Additionally the testbench may automatically check the correctness of the DUT outputs, and may report or log the values of various DUT signals and the events of the simulation. Simple testbenches generate all signals and do all checks and reports using verilog statements, but more complex testbenches may instantiate helper modules designed for various test functions and operations (signal drivers/generators, output checkers, scoreboards a.s.o.). | The testbench is a module used only in simulation for testing another module. It encloses the tested module (named DUT - Device Under Test) and generates the signals for the inputs of the DUT. Additionally the testbench may automatically check the correctness of the DUT outputs, and may report or log the values of various DUT signals and the events of the simulation. Simple testbenches generate all signals and do all checks and reports using verilog statements, but more complex testbenches may instantiate helper modules designed for various test functions and operations (signal drivers/generators, output checkers, scoreboards a.s.o.). | ||
[[Fișier:Dic_lab1_testbench.png]] | |||
For simple designs with few outputs that are easy to check visually on simulation waveforms, the testbench may be reduced to a DUT and the signals generation part. | |||
Versiunea de la data 27 februarie 2022 00:05
The Testbench Module
The testbench is a module used only in simulation for testing another module. It encloses the tested module (named DUT - Device Under Test) and generates the signals for the inputs of the DUT. Additionally the testbench may automatically check the correctness of the DUT outputs, and may report or log the values of various DUT signals and the events of the simulation. Simple testbenches generate all signals and do all checks and reports using verilog statements, but more complex testbenches may instantiate helper modules designed for various test functions and operations (signal drivers/generators, output checkers, scoreboards a.s.o.).
For simple designs with few outputs that are easy to check visually on simulation waveforms, the testbench may be reduced to a DUT and the signals generation part.
