probe_level

Syntax

probe_level = wildcard | top

Description

Specifies how to decide the hierarchical depth. Possible values are top and wildcard.

• top: Count the level starting from the top level.
• wildcard: The level/depth specified in the .probe statement is applied to wildcard(s) only. The hierarchical delimiters explicitly specified in .probe extend the level/depth to be probed (default).

Example

.option probe_level=wildcard
.probe v(x1.XIdecod4.*) level=1         
.probe v(x1.XIdecod3.*) preserve=all level=2  
.probe v(x1.XIdecod2.*) except=[*net*] level=3        

In the Spectre FX log file, the matching of wildcard is given as:

Wildcard match summary:
     probe v(x1.XIdecod3.*) depth= 2: 1098
     probe v(x1.XIdecod2.*) depth= 3: 206
     probe v(x1.XIdecod4.*) depth= 1: 16

Here, the option probe_level is defined as wildcard. As a result, the depth specified with the level parameter is applied to only the wildcard. The parameter preserve=all in the second .probe statement enables Spectre FX to probe all the nodes in different hierarchical levels and parameter except in the third .probe statement excludes all the nodes with the name *net*.