Set Drc Handling

Command Dictionary

 

 

If you do not specify the Error, Warning, Note, or Ignore option, then the handling is either set to the previous handling or set to the Design Rules Checker default.

NOVerbose

An optional literal that specifies for the tool to display the occurrence message only once for the rules violation. This is the default.

Verbose

An optional literal that specifies for the tool to display the occurrence message for each occurrence of the rules violation.

NOAtpg_analysis

An optional literal that specifies for the tool not to use test generation analysis when performing rules checking. This is the default.

Atpg_analysis

An optional literal that specifies for the tool to use test generation analysis when performing rules checking for clock rules (such as, C1, C3, C4, C5 and C6), some D rules (such as D6 and D9), and some E rules (such as, E4, E5, E8, E10, E11, and E12).

For clock rules C3 and C4, the Atpg_analysis option generates a check of the clocks of the source and sink to see if they are gated off. To see if a path exists from the Q output of the source to the sink, use the Set Sensitization Checking command with checking turned on. It is recommended that you use the Atpg_analysis option with the Set Sensitization Check On analysis to remove the maximum number of false C3 and/or C4 violations.

If you want the tool to use the constraint values during the D6 rule analysis, you must use the Atpg_analysis option.

Note

-Mode A clk_name

A switch, a literal (A), and a string triplet that specifies the name of the clock on which the tool performs further analysis to screen out false C3 and C4 clock rules violations.

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FastScan and FlexTest Reference Manual, V8.6_4

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