Mentor v8.6_4 manual Set Instruction Atpg, ∙ OFf

Command Dictionary Set Instruction Atpg

Set Instruction Atpg

Tools Supported: FlexTest

Scope: Atpg mode

Usage

SET INstruction Atpg OFf {ON filename}

Description

Specifies whether FlexTest generates instruction-based test vectors using the random ATPG process.

The Set Instruction Atpg command specifies that during ATPG FlexTest either generates functional test vectors using the instruction set that you specify in a file or generates common test vectors using the standard sequential-based ATPG

Typically, instruction-based test vectors are useful for high-end non-scan designs. Such high-end designs usually contain a large block of logic, like a microprocessor, that lends itself to instruction-based test vectors.

When you provide an ASCII file containing the information on the instruction set of a design, FlexTest can randomly combine these instructions to produce a high coverage functional pattern set. FlexTest first chooses an instruction and then tries to detect as many faults as possible with that instruction.

For more information on instruction-based test vector sets, refer to “ Creating Instruction-Based Test Sets (FlexTest Only)” in the Scan and ATPG Process Guide.

Arguments

∙OFf

A literal that disables FlexTest from performing instruction-based test generation. This is the default upon invocation of FlexTest.

∙ON

A literal that enables FlexTest to perform instruction-based test generation using the information you provide in filename.

FastScan and FlexTest Reference Manual, V8.6_4 2-511