Mentor v8.6_4 User Manual

FastScan and FlexTest Reference Manual, V8.6_4

Tools Supported: DFTInsight, FastScan, and FlexTest

FastScan Scope: All modes

FlexTest Scope: Setup and Drc modes

Prerequisites: You can use this command only after the tool performs the learning

process, which happens immediately after flattening a design to the simulation
model. Flattening occurs when you first attempt to exit Setup mode or when
you issue the Flatten Model command.

ADD DIsplay Loop pin_pathname | feedback_id#... | -All

DFTInsight Menu Path:

Display > Additions: Loop

Displays all the gates in a specified feedback path.

The Add Display Loop command creates a netlist containing a specific feedback
path which the tool identified during the circuit learning process. The learning
process provides an identification number and a list of gates for each such
feedback path. By default, the gate lists include any duplicated gates. You can
suppress duplicated gates by using the Set Loop Handling command prior to
initiating the circuit learning process.

The Add Display Loop command allows you to specify a feedback path by its
identification number. You can display a list of all the feedback path identification
numbers by using the

If you already have invoked DFTInsight on a flattened design, the viewer
automatically displays the graphical representation of the netlist and also marks
key instances in the schematic view. Otherwise (if licensed), DFTInsight is
automatically invoked on the netlist.