using Xilinx design tools. Place and route the design with ILA cores. Download bit-stream on to FPGA and analyze the signals using chipscope. Xilinx ChipScope ICON/VIO/ILA Tutorial. The Xilinx ChipScope tools package has several modules that you can add to your Verilog design to. If you are new to FPGAs, one aspect of the development flow you may not have considered is how you will go about debugging your design.

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Name the new bus count.

Using ChipScope ILA Core

Leave the remaining three checkboxes unchecked and click “Next”. Having configured the target device, you can then connect to the target over JTAG using the ChipScope Analyzer tool and trigger on the waveform of interest as illustrated in the screenshot below.

Sadly, however, in many cases they do not remove the need to rebuild the code. This allows you to have different groups to choose from when you do your triggering at run-time. Select the “Data same as Trigger” box, which allows you to view all the signals of interest, as well as to potentially trigger on all of them. ChipScope will begin downloading the. An ILA is a logic analyzer block which can trigger on internal signals and capture them inside a memory so that they can be viewed through the analyzer GUI.

In order to use the ChipScope internal logic analyzer in an existing design project, you first generate the ChipScope core modules, which perform the trigger and waveform capturing functionality on the FPGA.

As with their physical counterparts, these virtual logic analyzers — like ChipScope from Xilinx, Identify RTL Debugger from Synopsys, Reveal from Lattice Semiconductor, and Cbipscope from Altera — can be set up so that they will only start collecting data after certain trigger conditions cgipscope been met. For this tutorial, you only need 1 match unit.


The waveform window should now only contain the bit bus count. Under clock settings, choose to sample on the rising edge of the clock. This file also provides a dummy “black-box” definition of the core.

You have now generated all the necessary ChipScope hardware blocks, and are ready to include them in the existing counter design. Click “OK” to dismiss the “Configur In some cases, the physical construction of the unit in question means that test headers are of use only at the board level and not during system integration. The sample memory of the analyzer is limited by the memory resources of the FPGA. Make sure Virtex II is selected as the device family.

Using virtual logic analyzers may remove the need for test headers.

Chipscope Ila doesn’t show anything!

One solution to this problem — a solution ilz has seen great advances over the last few years — has been the development of in-chip logic analyzers for use with FPGAs. At the end of the labkit.

The big downside with this approach comes in designs that are already utilizing most of the devices programmable resources, because this will limit any logic analyzer implementations. Then we would run the system and try to lla out what the heck was happening. Click “Select New File” in the dialog that appears, and then select the labkit. This tutorial builds on the simple counter project, described in the Getting Started tutorial.

Watch the progress indicator in the lower-right kla of the ChipScope window. Match chipwcope allow you to create different trigger vectors so that you can trigger on a sequence of different vectors: Afterwards, you instantiate these cores in your Verilog code, and you connect those modules to the signals you want to monitor.

Example Verilog code showing how to instantiate the ILA core, and a dummy “black-box” ola of the core. It is therefore not possible to detect glitches with ChipScope.


This is where you will connect the signals you wish to analyze. For Number of trigger ports, choose 1 for ika, although for your design you are free to use up to See Xilinx Answer Recordwhich recommends the following workarounds: Connect the programming cable to the JTAG port on the labkit, and power on the labkit.

Debugging with ChipScope ( labkit)

For example, while your design is running on the FPGA, you can trigger when certain events take place and view any of your design’s internal signals. Instead of loading the resulting. ChipScope Analyzer also provides the interface for setting the trigger chipscopf for the ChipScope cores, and for displaying the waveforms recorded by those cores.

For this tutorial, you will need two different types of modules: If your design had multiple up to 15 ILA modules, each chjpscope be connected to a different control port on the ICON, using a unique bit control bus. If you are new to FPGAs, one aspect of the development flow you may not have considered is how you will go about debugging your design once it has been loaded into the FPGA.

And one further problem is that, inevitability, the logic analyzer you are using will also be required by one or more other project teams, which means you all have to ilx on how you will allocate the analyzer resources.

Choose for data depth. If you no longer have that project setup, create a new project in Project Navigator, and add iila following files.

Indeed, I am working on one such project at the time of this writing.