Flatten Model

Command Dictionary

 

 

Flatten Model

Tools Supported: FastScan and FlexTest

Scope: Setup mode

Usage

FLAtten MOdel

Description

Creates a primitive gate simulation representation of the design.

The tool automatically flattens the design hierarchy down to the logically equivalent design when you exit Setup mode. However, there may be times that you would like to access the flattened model without having to exit Setup mode. For example, you may want to add ATPG constraints and functions before you exit Setup mode.

If you exit Setup mode and then add ATPG constraints and functions, the design rule checker does not have access to those ATPG constraints during the rule checking. If you issue the Flatten Model command in Setup mode and then add those ATPG constraints, the design rule checker has access to them during the rule checking.

Examples

The following example shows flattening the design to the simulation primitives before adding constraints that the rule checker then uses when you run the design rule checker. The rule checker runs when you first attempt to exit Setup mode

flatten model

add atpg functions and_b_in and /i$144/q /i$141/q /i$142/q add atpg constraints 0 /i$135/q

add atpg constraints 1 and_b_in set system mode atpg

Related Commands

 

Add Atpg Constraints

Set System Mode

Add Atpg Functions

 

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FastScan and FlexTest Reference Manual, V8.6_4

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Mentor v8.6_4 manual Flatten Model