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AR# 17831

6.1i ISE - Timing simulation ".tdo" file calls "testbench.udo" instead of my "<testbench_name>.udo" file


Keywords: timing, do file, UDO, user, TDO, Project Navigator, simulation, testbench

Urgency: Standard

General Description:
In the "testbench.tdo" file created by Project Navigator, a statement executes "testbench.udo" but not the "<user_do_name>.udo" with my "testbench name".


In ISE 6.1i, the automatically created "testbench.tdo" file always executes the "testbench.udo" file. The automatically created "testbench.udo" file will typically be empty.

To include a user-created DO file:

1. Select the Test bench file in the "Sources in Project" window.
2. Right-click the simulation process in the Processes for current Source window.
3. Select the "Use Custom DO File" option.
4. Browse to the location of the DO file in the "Custom DO File" field.

You may also edit the "testbench.tdo" file to point to the desired file(s). However, if any of the simulation process properties are changed, the "testbench.tdo" file will be overwritten upon execution of the simulation process.
AR# 17831
Date Created 08/20/2003
Last Updated 02/07/2006
Status Archive
Type General Article