nolog

The nolog command suspends writing of data to the wave log format (WLF) file for the specified signals. A flag is written into the WLF file for each signal turned off, and the gui displays "-No Data-" for the signal(s) until logging (for the signal(s)) is turned back on.

Logging can be turned back on by issuing another log command or by doing a nolog reset.

Because use of the nolog command adds new information to the WLF file, WLF files created when using the nolog command cannot be read by older versions of the simulator. If you are using dumplog64.c, you will need to get an updated version.

Syntax

nolog

[-all] | [-reset] | [-recursive] [-in] [-out] [-inout] [-ports]
[-internal] [-howmany] <item_name>  ...

Arguments

-all

Turns off logging for all signals currently logged. Optional. Must be used alone without other arguments.

-reset

Turns logging back on for all signals unlogged. Optional. Must be used alone without other arguments.

-recursive

Specifies that the scope of the search is to descend recursively into subregions. Optional; if omitted, the search is limited to the selected region.

-in

Specifies that the WLF file is to exclude data for ports of mode IN whose names match the specification. Optional.

-out

Specifies that the WLF file is to exclude data for ports of mode OUT whose names match the specification. Optional.

-inout

Specifies that the WLF file is to exclude data for ports of mode INOUT whose names match the specification. Optional.

-ports

Specifies that the scope of the search is to exclude all ports. Optional.

-internal

Specifies that the WLF file is to exclude data for internal items whose names match the specification. Optional.

-howmany

Returns an integer indicating the number of signals found. Optional.

<item_name>

Specifies the item name which you want to unlog. Required. Multiple item names may be specified. Wildcard characters are allowed.

Examples

nolog -r /*

Unlogs all items in the design.

nolog -out *

Unlogs all output ports in the current design unit.

See also

add list, add wave, log

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