User Manual

Analyzing Critical Paths Chapter 4. Tasks
Figure 4.15: Critical Path Diagram with net ”s[30]” selected. Note that the single net is represented by two
arrows.
Viewing Critical Paths in the Schematic Viewer
Currently, ACE does not have its own built-in schematic viewer. Viewing critical paths must be done in the
synthesis tool. In order to facilitate this, ACE can optionally generate a Tcl script with find commands for
objects along each critical path.
To view critical paths in the synthesis tool:
1. In the Critical Paths view, click on the Save Script File toolbar button ( ) to open the Save Script File
dialog.
2. Enter a valid file in the Save Script File dialog and click Save.
3. Source the saved script file from within the synthesis tool’s Tcl prompt.
4. After the file is sourced, open the synthesis tool’s schematic viewer. At the Tcl prompt, type
”select one path <path id >”
to view a given path, where the <path id> is the value from the Path column of the table in the
Critical Paths view, and/or the Path Id value from one of the Timing Reports.
281 http://www.achronix.com UG001 Rev. 5.0 - 5th December 2012