Intel® Quartus® Prime Pro Edition User Guide: Design Compilation

ID 683236
Date 12/04/2023
Public
Document Table of Contents
Give Feedback

2.4. Using the Node Finder

The Node Finder allows you to search objects in the design netlist based on your search criteria. It returns a list of matching nodes. From the nodes list, you can also locate a node using the RTL Analyzer and other Intel® Quartus® Prime software tools. In terms of the functionality, it is similar to the Object Finder in the RTL Analyzer. You must complete the Analysis & Elaboration compilation stage to perform a search.
Note: This version of the Node Finder is available only in Intel® Quartus® Prime Pro Edition software versions 23.3 and later.

To launch the Node Finder, on the Intel® Quartus® Prime software menu, click View > Node Finder. In the following example, the Node Finder has found all user-entered names in your design files:

The Named field accepts partial or full-text characters and standard wildcard characters. When you click Search, the Node Finder searches all node names matching the specified text. Your search strings are saved, so you can access previously searched strings using the drop-down. The Node Finder provides additional search options (described in the section below) to refine your search.

Node Finder Search Options

Use the Show More Search Options button in the Node Finder to apply filters and refine your search. The following search options are available:

Important: Search options available in the Node Finder vary based on the filter you select in the Filter drop-down list.
Table 4.  Node Finder Search Options
Node Finder Search Options Description
Filter Provides a set of default filters. For more information about each filter, refer to the Node Finder Search Filters table.

To refine your search, you can either use one of the default filters or create a custom filter based on one of the default filters using the Customize button.

Object type Specifies the object type to search for. You can choose between instance, instance_bus, instance_port, port, port_bus, net, and net_bus.
Look in Allows you to refine your search hierarchy path. Use the browse button to select the search hierarchy level. It displays the Select Hierarchy Level dialog box, allowing you to navigate and select the desired hierarchy level.
Include subentities Includes node names below the current search hierarchy level in the Nodes Found list.
Hierarchy view Allows you to view nodes in the Nodes Found list in hierarchy levels.
Case-insensitivity Allows searching case-insensitive node names. By default, the search is case-sensitive. With this option enabled, the search returns the same result irrespective of whether you use lowercase or uppercase search strings.
Filters drop-down Allows toggling the visibility of the property filters table for certain filters in the Filter field.
Property Filters Allows adding or removing object properties, such as object name, name of an object's parent, number of ports, source file or line number in the source, and so on. You can type the property values (integer or string) manually.

Node Finder Search Filters

The following search filters are available in the Node Finder:

Table 5.  Node Finder Filters and Search Mode
Filter Name Description
Design Entry (all names) Finds all user-entered names in the search hierarchy path.
Pins: assigned Finds all assigned pins in the search hierarchy path.
Pins: unassigned Finds all unassigned pins in the search hierarchy path.
Pins: input Finds all input pins in the search hierarchy path.
Pins: output Finds all output pins in the search hierarchy path.
Pins: bidirectional Finds all bidirectional pins in the search hierarchy path.
Pins: virtual Finds all I/O elements mapped to logic elements with a virtual pin logic option assignment.
Pins: all Finds all pins in the search hierarchy path.
Pins: all & Registers: post-fitting Finds all pins and registers that persist after physical synthesis and fitting within the search hierarchy path.
Note: This filter is a combination of the Pins: all and Registers: post-fitting filters.
Ports: partition Finds all user-entered and compiler-generated partition ports within the post-fit netlist and search hierarchy path.
Entity instance: pre-synthesis Finds all entity instances within the pre-synthesis netlist and search hierarchy path.
Registers: pre-synthesis Finds all user-entered register names contained in the design after Analysis & Elaboration, but before physical synthesis performs any synthesis optimizations.
Registers: post-fitting Finds all user-entered registers in the search hierarchy path that survived physical synthesis and fitting.
Post-synthesis Finds all user-entered and synthesis-generated nodes contained in the design after design elaboration and physical synthesis.
Post-synthesis: preserved for debug Finds all internal device nodes that you have designated with preserve for debug in the post-synthesis netlist.
Post-Compilation Finds all user-centered and compiler-generated names that persist post-fit and do not have location assignments.
Signal Tap: pre-synthesis Finds all internal device nodes in the pre-synthesis netlist that are preserved for analysis by the Signal Tap Logic Analyzer.
Note: Signal Tap: pre-synthesis user defined filter option is unsupported in the DNI mode because functionally, it is same as the Signal Tap: pre-synthesis.
Signal Tap: post-fitting Finds all internal device nodes in the post-fit netlist that are preserved for analysis by the Signal Tap Logic Analyzer.
Signal Tap: post-fitting user defined Finds all user defined internal device nodes in the post-fit netlist that are preserved for analysis by the Signal Tap Logic Analyzer.
Signal Tap: pre-synthesis preserved for debug Finds all internal device nodes in the pre-synthesis netlist that are preserved for analysis by the Signal Tap Logic Analyzer.
Signal Tap: post-fitting preserved for debug Finds all internal device nodes in the post-fit netlist that are preserved for analysis by the Signal Tap Logic Analyzer.

The following image illustrates an example of the Node Finder finding case-insensitive internal device nodes in the pre-synthesis netlist:

Figure 4. Example of Finding Case-insensitive Internal Device Nodes

The following image illustrates an example of the Node Finder using the Post-synthesis filter to find user-entered synthesis-generated nodes in the design:

Figure 5. Example of Finding User-entered Synthesis-generated Nodes