Intel® Quartus® Prime Pro Edition User Guide: Scripting

ID 683432
Date 12/13/2021

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Document Table of Contents assignment_group (::quartus::project)

The following table displays information for the assignment_group Tcl command:

Tcl Package and Version

Belongs to ::quartus::project

Syntax assignment_group [-h | -help] [-long_help] [-add_exception <name> ] [-add_member <name> ] [-comment <comment> ] [-disable] [-fall] [-get_exceptions] [-get_members] [-overwrite] [-remove] [-remove_exception <name> ] [-remove_member <name> ] [-rise] [-tag <data> ] <group_name>
Arguments -h | -help Short help
-long_help Long help with examples and possible return values
-add_exception <name> Tcl list of exception names to add
-add_member <name> Tcl list of member names to add
-comment <comment> Comment
-disable Option to disable assignment
-fall Option applies to falling edge
-get_exceptions Option to get collection of assignment group exceptions
-get_members Option to get collection of assignment group members
-overwrite Option to overwrite existing assignment group with the same group name
-remove Option to remove assignment group
-remove_exception <name> Tcl list of exception names to remove
-remove_member <name> Tcl list of member names to remove
-rise Option applies to rising edge
-tag <data> Option to tag data to this assignment
<group_name> Assignment group name
Adds, removes, gets members of, or gets exceptions to
an assignment group.

The "assignment_group" command replaces the deprecated
"timegroup" command.

An assignment group is a custom group of registers and
pins. You can use the "-add_member" option to specify
register or pin names you want to include in the
assignment group. You can use the "-add_exception"
option to specify names you want to exclude from the
assignment group.

You can specify the names using wildcards, that is,
using "?"  or "*". For example, to add all registers
and pins that start with a "b" except those that start
with "b|c|" to a particular assignment group named
"group_b", type:

assignment_group "group_b" -add_member "b*" -add_exception "b|c|*"

To remove members or exceptions from a assignment
group, use the "-remove_member" or "-remove_exception"
options respectively.

The "-get_members" option returns a collection of
members in the assignment group. The "-get_exceptions"
option returns a collection of exceptions to the
assignment group. Each element of the collection is a
list in the following format:

 		{ {Assignment group name} {<Assignment name>} {<Register or pin name>} }

In lists containing members, <Assignment name> is
always "ASSIGNMENT_GROUP_MEMBER". In lists containing
exceptions, <Assignment name> is always

To disable assignments for an entire group, use the
"-disable" option, for example:

assignment_group "group_a" -disable

To disable a particular assignment group assignment,
use the "-disable" option with the "-add_member" or
"-add_exception" options, for example:

assignment_group "group_a" -add_member "m1" -disable
assignment_group "group_a" -add_exception "e1" -disable

Assignments created or modified by using this Tcl
command are not saved to the Quartus Prime Settings File
(.qsf) unless you explicitly call one of the following
two Tcl commands:

1) export_assignments 
2) project_close (unless "-dont_export_assignments" is

The "export_assignments" and "project_close" Tcl commands
reside in the ::quartus::project Tcl package. You must
save assignment changes before you run Quartus Prime
command-line executables. Note, however, that the Tcl
commands "execute_flow" and "execute_module" (part of
the ::quartus::flow Tcl package) automati