Simulation

Introduction

OrigenSim is a plugin that enables semiconductor test patterns (and flows) written in Origen/Ruby to be run in a dynamic Verilog simulation, similar to what is commonly known as a Virtual Test simulation in other workflows.

It provides a simulation tester driver (which can be used as a direct replacement for Origen’s conventional ATE tester drivers) which will pass requests to drive or expect pin values onto a simulator instead of rendering them to an ASCII file. Since the application-level Origen code is the same in both cases, it guarantees that what happens in the simulation and in the final pattern are the same and that ultimately they will work first time on silicon.

For debugging, OrigenSim supports the injection of regular Ruby debugger breakpoints anywhere in the pattern source code. This will halt the simulation at the given point in time, allowing it to be interactively debugged at the Origen-source-code level.

Similarly, an Origen interactive session (origen i) can be launched with an OrigenSim driver, allowing designers and test engineers to use Origen APIs to interactively manipulate a live simulation of their DUT while viewing the response in real time in a wave viewer.

To enable your application to use OrigenSim, simply add the plugin to your Gemfile:

gem "origen_sim"

and then create a simulation environment setup.