Command Dictionary Add Nonscan Handling
FastScan and FlexTest Reference Manual, V8.6_4 2-87
Add Nonscan Handling
Tools Supported: FlexTest
Scope: Setup mode
Prerequisites: Your design must have scan in order to be able to add nonscan
handling.
Usage
ADD NOnscan Handling learned_behavior element_pathname...
[-Instance | -Module]
Description
Overrides behavior classification of non-scan elements that FlexTest learns during
the design rules checking process.
When you exit the Setup mode, the design rules checker classifies each non-scan
element into a type of learned behavior. FlexTest then uses this information when
simulating the operation of the scan chains.
However, due to limitations on modeling and simulation capabilities, FlexTest
can sometimes pessimistically classify a non-scan element. If you want to
override the behavior classification of a particular non-scan element, you can use
the Add Nonscan Handling command.
The Set Nonscan Model command continues to have the same effect on HOLD
and INITX for behaviors learned from the design rules checker, or that you set
with the Add Nonscan Handling command.
Arguments
•learned_behavior
A required literal argument that specifies the classification of learned behavior
that you want to assign to the named non-scan element. The choices for the
learned_behavior argument, from which you can select only one, are:
TIE0 — A literal that specifies for the non-scan element to always be at a
low state when FlexTest operates the scan chain.
TIE1 — A literal that specifies for the non-scan element to always be at a
high state when FlexTest operates the scan chain.