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AR# 18489

6.1i IP1 CORE Generator - Release Notes and Known Issues for CORE Generator in 6.1i IP Update #1


General Description:

This Answer Record contains:

- Release Notes and installation instructions

- What's New in 6.1i IP update #1

- A list of Known Issues for CORE Generator 6.1i IP update #1

******* NOTE *********

If you have previously downloaded 6.1i IP update #1 from the Xilinx Web site during the month of December 2003, please download the newer IP update (6.1i IP Update #1_01) available as of January 9, 2004. The newer update will address the issue we had with Asynch FIFO v5.1. See (Xilinx Answer 18708).



Supported operating systems:

Windows 2000 Professional (Service Pack 2-4)

Windows XP Home (Service Pack 1) / Professional (Service Pack 1)

Sun Solaris 8/9

Red Hat Linux 7.3/8.0

Tool Requirements:

Before you install the IP provided in this update, the 6.1i Xilinx ISE software with Service Pack 3 (6.1.03i) must be installed on your machine. Installing this version of the ISE software gives you access to the correct version of the CORE Generator application.

For information on the latest available CORE Generator IP updates, please see the Xilinx Software Updates page and follow the instructions for downloading and installing these updates:


Method 1: Automated Update using the Updates Installer

NOTE: You must be using ISE 6.1i to access the proper version of the Updates Installer, which automatically locates the required update file archive and displays it in the selection window. It is not necessary to perform a separate download of the update file archive using this method. Users should also install ISE 6.1.03i software prior to installing IP Update #1.

1. Start the CORE Generator Update Installer. (From the CORE Generator Main GUI, select Tools -> Update Installer.)

- If you are prompted for a proxy host, contact your administrator to determine the proxy host address and port number you should be using to get through your firewall.

2. Select " 6.1i_IP_Update_1" from the list of updates in the Available Packages panel.

3. Click "Add To Install Queue" to add the ZIP file for the update to the install queue.

- If you are prompted to enter a log-in name and password, use the Xilinx log-in and password that you would normally use when downloading IP Updates and software Service Packs.

4. Click "Install All Packages From Queue". This will automatically initiate a download of the update.

- After the update has been downloaded, the Updates Installer displays a dialog box indicating that it is terminating the CORE Generator session and installing the downloaded archive. Another dialog box will inform you when the update installation is complete. You can then restart CORE Generator.

5. To confirm that you have installed the update properly, check the following file:


(This assumes that your Xilinx software is installed in C:\Xilinx.)

- Ensure that you have "gip1" noted at the top of the file along with the current date and time.

Method 2: Manual Installation Method

1. Close the CORE Generator application if it is running.

2. Download the ZIP file (PC) or "tar.gz" file (UNIX) from the following location and save it to a temporary directory:


For Windows, unpack the ZIP file using WinZip 7.0 SR-1 or later.

For UNIX platforms, you can use some versions of UnZip to unpack this ZIP file. Xilinx recommends that you download the "tar.gz" file and unpack it using the UNIX command line utilities "gunzip" and "tar". WinZip and GNU "tar" are not recommended for extracting the "tar.gz" archive due to differences in the way they handle files with long path names. Please see (Xilinx Answer 11162) for more details.

3. Extract the ZIP file (61i_ip_update1.zip) or "tar.gz" (61i_ip_update1..tar.gz) archive to the root directory of your Xilinx software installation. Allow the extractor utility you use to overwrite all existing files and maintain the directory structure pre-defined in the archive.


The Xilinx software installation directory is typically located at "C:\XILINX" if the installation defaults were used.


If you have already installed your Xilinx ISE software, the Xilinx installation directory location is the value of the "XILINX" variable, which is defined by your setup script. After sourcing your Xilinx setup script, type "echo $XILINX" to determine the location of your Xilinx installation. You might need system administrator privileges to install the update.

4. Restart CORE Generator. During start-up, CORE Generator automatically detects that new IP has been added to your installation. It allows you to specify which IP customizers ("cores") will be visible in your currently active CORE Generator project. For your current project, you can choose to:

- Display only the latest versions for "All" cores in the catalog.

- Update the catalog view to only add "New" cores to the display.

- Make a "Custom" selection of cores visible in the CORE Generator catalog display for your current project.

5. Determine whether the installation was successful by verifying that the new cores are visible in the CORE Generator GUI.

Acrobat Reader Requirement

Acrobat Reader Version 4 or later must be installed to view core data sheets. You can download the latest Acrobat software from the following Adobe site:


To search for available IP cores, please see:


If you have comments, questions, or problems, please contact Xilinx Technical and Applications Support: http://www.xilinx.com/support/techsup/tappinfo.htm

What's New

Cores Included in this Release:


Enhanced licensing diagnostic messages is added for cores that require electronic licenses to be installed to activate access.

Shorter generated file and directory names: Long file names can cause problems for users, especially on PCs with a 260-character limit. Names of COREGen directories in the temporary structure have been trimmed where possible to reduce long explicit path/filename problems.

- Pre-compiled XilinxCoreLib libraries for ModelSim Xilinx Edition II (MXE) are available at:



6.1i COREGen - CORE Viewer reports incorrect resource utilization for XST-based cores.

Please see (Xilinx Answer 14676).

6.1i COREGen (Japanese version) - If the "_" (underscore) character is used in a component name, the character is written out as a "|" (pipe character). For details on this possible naming issue when using a machine with a Japanese 106-character keyboard, please see (Xilinx Answer 15312).

6.1i ISE - When I select Project -> New Source, the CORE Generator module name must be reentered. Core GUIs are not automatically passed the name value from the Project Navigator New Source Wizard.

Please see (Xilinx Answer 9127).

6.1i COREGen - No CORE Generator cores are shown in the COREGen GUI. If the Core Catalog displays no available cores, please see (Xilinx Answer 17685).

6.1i COREGen - "ERROR: User has selected the Foundation ISE flow. Current project is not a valid ISE project" is reported when Design Entry is set to "Other" (not to "ISE").

Please see (Xilinx Answer 18601).

IP Known Issues

6.1i IP Update #1 (G_ip1) - Known Issues for System Logic IP: Known Issues regarding System Logic IP released with 6.1i IP Update #1.

Please see (Xilinx Answer 18622).

LogiCORE Gigabit Ethernet MAC v4.0 - Release Notes

Please see (Xilinx Answer 18571).

LogiCORE 10 Gigabit Ethernet MAC v4.0 - Release Notes

Please see (Xilinx Answer 18572).

LogiCORE 1000BASE-X PCS/PMA v4.0 - Release Notes

Please see (Xilinx Answer 18573).

LogiCORE XAUI v4.0 - Release Notes

Please see (Xilinx Answer 18575).

6.1i - System Generator for DSP - Known Issues List

Please see (Xilinx Answer 18002).
AR# 18489
Date Created 09/03/2007
Last Updated 07/28/2010
Status Archive
Type General Article