Mentor v8.6_4 manual Set Output Mask

Command Dictionary Set Output Mask

Set Output Mask

Tools Supported: FlexTest

Scope: All modes

Usage

SET OUtput Mask OFf ON

Description

Specifies how FlexTest handles an unknown (X) state in an external pattern set.

The Set Output Mask command allows you to specify for FlexTest to ignore external patterns with unknown states. This is useful if your external pattern set contains patterns with an output pin value of X which is meant to show that FlexTest is not measuring that output pin at the specified time.

You can use the Report Environment command to display the current setting of the output mask.

Arguments

∙OFf

A literal that specifies for FlexTest to give possible credit for fault effects that reach a pin which the external pattern set specifies as being at an unknown value. This is the default behavior upon invocation of FlexTest.

∙ON

A literal that specifies for FlexTest to mask the simulated output pin value with an X for external patterns that contain an unknown state. So, for that pattern, FlexTest does not give credit for any stuck-at fault effects that reach a pin that is at the unknown state.

Examples

The following example enables FlexTest to mask the output pins of external patterns that contain an unknown state:

set output mask on

FastScan and FlexTest Reference Manual, V8.6_4 2-543