UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 1225

How to re-target a different Xilinx device family with Viewlogic's Altran

Description

The following are steps on how to change a Viewlogic schematic to target a
different Xilinx device family. This applies to all Viewlogic schematic
entry tools on both PC and UNIX platforms. Similar steps can be perfomed on
different design entry tools. This particular example converts from an
XC4000 device to an XC5200 but these families may be interchanged with any
other Xilinx device family.

Solution

*** If you purchased PROseries from Xilinx, there is a Windows-based
graphical utility called Xaltran which will perform the steps below.
You can execute this program either by changing families from the
PROflow interface or double-clicking xaltran.exe located in the PROSER
directory from File Manager.

1. Change the library that the schematic components are pointing to by
running Altran on the design. This can be done either from Windows
(PROseries will automatically run this program when changing families)
or can run it from a command line (UNIX and DOS). The syntax is:

altran -l primary xc4000=xc5200

Note: Altran is a Viewlogic program and must only be used with
Viewlogic schematics. This example takes schematic components aliased
to the xc4000 library and redirects it to the xc5200 library.

2. Remove the xc4000 library form the library search path and add the 5200.
In ViewLogic this is done by editing the viewdraw.ini file located in the
project directory. Workview Office users will make this change in the
Project Manager. The easiest way to make this change is to change the
existing library path that is pointing to the xc4000 library to point to
the xc5200 library and change the alias to say xc5200.

3. Verify that design translated corectly by viewing schematic, running
check on the project (from command line type : check -l primary), and
performing a functional simulation on design (optional). Be careful that
device specific primatives/macros (such as wide-edge decoders) are
replaced with the equivelent primatives/macros from the re-targeted
device library.

Note: All components that exist in the original design but do not exist
in the target family will have to be replaced by hand. For example, if
your xc4000 design is translated to the xc5200 family, any RAM components
will not be found because they are not supported by the xc5200. Any
situations like this must be dealt with manually by the user.

4. Once verified, you can reprocess design retargeting to the desired target
device. (This is usually done in either Design Manager, XDM, or from
command line with xmake)

5. Re-verify design by performing a timing simulation.

If the origional design was done on pre-5.0 XACT with the "non-unified" libraries more caution needs to be maintained. Pre-unified libraries have different names and functionality for a lot of the macros in the different family groups. Unified library replacement names for the 4000 are located
in the libraries guide on pages 2-52 to 2-67.

Please refer to the Libraries Guide for more information on Library components.
AR# 1225
Date Created 09/10/1996
Last Updated 03/28/2000
Status Archive
Type General Article