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ICCR: toggle exclude for bits of a bus

Cadence Forum

Dear Sirs,

could anyone give me an example on how to exclude a bit of an internal bus in the toggle exclude file for ncelab?

For instance, if I use

INSTANCE <pathname>:<bus_name>*

I exclude from the statistics all the bits of the bus, but specifying a single bit, it seems not working

INSTANCE <pathname>:<bus_name>(<bit_number>)

I tried also to escape the parenthesis with

INSTANCE <pathname><bus_name>\(<bit_number>\)

but without success.

Thanks in advance

Sergio

Parents

  •  Hi Sergio,

    The bitexclude option is an argument to the set_toggle_excludefile option used in a coverage configuration file.  The description is as follows: 

    set_toggle_excludefile [-nolog] [-bitexclude] <file>

    where

    • -nolog ensures that no log file is generated to dump the list of signals that were excluded for toggle coverage. In the absence of this option, a log file named toggle_exclude.log is generated.

    • -bitexclude allows exclusion of bit selects of vector signals. With this option, the patterns in the exclude file are matched against the expanded names of each vector bit.

    • <file> is the name of a file that contains a list of signal names that are to be excluded from toggle coverage. A warning is reported if <file> includes signals of instances/modules, which are deselected using the deselect_coverage command in the coverage configuration file.

    you can find specific documentation on how to write the excluded signals file by looking in the ICC User Guide (<install>/doc/iccug/iccug.pdf, look in chapter 8 "Generating Coverage Data"), or you can also open that document within cdnshelp.

    Hope that helps

    Micke

Reply

  •  Hi Sergio,

    The bitexclude option is an argument to the set_toggle_excludefile option used in a coverage configuration file.  The description is as follows: 

    set_toggle_excludefile [-nolog] [-bitexclude] <file>

    where

    • -nolog ensures that no log file is generated to dump the list of signals that were excluded for toggle coverage. In the absence of this option, a log file named toggle_exclude.log is generated.

    • -bitexclude allows exclusion of bit selects of vector signals. With this option, the patterns in the exclude file are matched against the expanded names of each vector bit.

    • <file> is the name of a file that contains a list of signal names that are to be excluded from toggle coverage. A warning is reported if <file> includes signals of instances/modules, which are deselected using the deselect_coverage command in the coverage configuration file.

    you can find specific documentation on how to write the excluded signals file by looking in the ICC User Guide (<install>/doc/iccug/iccug.pdf, look in chapter 8 "Generating Coverage Data"), or you can also open that document within cdnshelp.

    Hope that helps

    Micke

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