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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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Select core type to generate: You can have multiple ILA blocks for separate parts of your design.

Using ChipScope ILA

Instead of loading the resulting. One big advantage of these in-chip logic analyzers is that they offer the ability to capture the values on wide internal busses and store these values in internal RAM.

Also, ChipScope cannot sample as quickly as an external logic analyzer. Cchipscope only need one ICON in your design. If you no longer have that project setup, create a new project in Project Navigator, and add the following files. Watch the progress indicator in the lower-right corner of the ChipScope window.

Leave all other settings at their default values and click “Next”. At the end of the labkit. An ILA is a logic analyzer block which can trigger on internal signals and capture them inside a memory so that they can be chipacope through the analyzer GUI.

Indeed, I am working on one such project at the time of this writing. This is a chipsope bug in ChipScope 6. Leave the remaining three checkboxes unchecked and click “Next”.

Change the trigger width to a number that, when divided by eight, does not leave a remainder of 1, 2, 3, or 4. Match units allow you to create ilq trigger vectors so that chipacope can trigger on a sequence of different vectors: The functionality of these modules will be filled in when the.

If your design had multiple up to 15 ILA modules, each would be connected to a different control port on the ICON, using a unique bit control bus. The trig0 port on the ILA should be connected to the signals that you wish to probe with the ChipScope analyzer.


Click “OK” to dismiss the “Configur During the “Translate” portion of the design compilation process, the.

Debugging with ChipScope ( labkit)

The black-box definitions will look like this module icon control0 ; output [ Generally, ChipScope sampling rate will be the same as the design’s clock frequency. The chipscopd downside with this approach chippscope in designs that ilaa already utilizing most of the devices programmable resources, because this will limit any logic analyzer implementations. ChipScope is a set of tools made by Xilinx that allows you to chipacope probe the internal signals of your design inside an FPGA, much as you would do with a logic analyzer.

As with their physical counterparts, these virtual logic analyzers — like ChipScope from Xilinx, Identify RTL Debugger from Synopsys, Reveal from Lattice Semiconductor, and SignalTap from Altera — can be set up so that they will only start collecting data after certain trigger conditions have been met. 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.

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

Chipscope Ila doesn’t show anything!

Afterwards, you instantiate these cuipscope in your Verilog code, and you connect those modules to the signals you want to monitor. The waveform window should now only contain the bit bus count.

One of the tools we would have employed would be a logic analyzer. 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. See Xilinx Answer Recordwhich recommends the following workarounds: Under Trig0, choose a trigger width of Name the new bus count.

Set the output netlist field so that the ICON core is generated in the counter project directory, Make sure the output netlist name ends with.

Click the play button in the ChipScope toolbar to arm the analyzer, and wait for a trigger event. Make sure Virtex II is selected as the device family. Example Verilog code showing how to instantiate the ILA core, and a dummy “black-box” definition of the core. This means that you may have to keep on rebuilding your design to access the signals of interest and route them out to the test header.


When the waveform window updates, note that the eight LSBs of the value of the count bus at sample zero are zero. This allows you to have different groups to choose from when you do your triggering at run-time.

This file also provides a dummy “black-box” definition of the core. 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 agree on how you will allocate the analyzer resources. ChipScope will begin downloading the. Now we will include some ChipScope modules chipdcope the counter example in order to allow us to do run-time debugging of the internal signals on the FPGA.

Chipscope Ila doesn’t show anything! – Q&A – FPGA Reference Designs – EngineerZone

Type eight zeros, and then return. In some cases, the physical construction of the unit in question means that test headers ia of use only at the board level and not during system integration.

In the Trigger Setup window, highlight the last eight “X”s of the value field. This tutorial builds on the simple counter project, described in the Getting Started tutorial. ChipScope Analyzer also provides the interface for setting the trigger criteria for the ChipScope cores, and for displaying the waveforms recorded by those cores. For this tutorial, you will need two different types of modules: Choose for data depth. A dialog box will appear that lets you create the necessary hardware modules for your FPGA.

To group analyzer channels into a bus, expand the “Data Port” item in the window pane labeled “Signals: As with the ICON core, the output netlist should be generated chipscole your project directory, and the device family should be set to Virtex II.