Altera Quartus II Scripting - Manual (Page 357)

Chapter 3: Tcl Packages & Commands 3–227
project
© July 2013 Altera Corporation Quartus II Scripting Reference Manual
remove_all_global_assignments
Usage
remove_all_global_assignments [-entity <entity_name>] -name <name> [-section_id
<section id>] [-tag <data>]
Options
-entity <entity_name>: Entity to which assignment belongs
-name <name>: Assignment name (string pattern is matched using Tcl string matching)
-section_id <section id>: Section id
-tag <data>: Option to tag data to this assignment
Description
Removes all matching global assignments.
The "-name" option is not case sensitive. This option can take string patterns containing special characters
from the set "*?\[]" as the value. The value is matched using Tcl string matching.
This Tcl command reads the global assignments found in the Quartus II Settings File (.qsf). This Tcl
command filters the assignments data found in the .qsf and removes the data based on the values specified
by the "-name" option.
Certain sections in the .qsf can appear more than once. For example, because there may be more than one
clock used in a project, there may be more than one CLOCK section each containing its own set of clock
assignments. To uniquely identify sections of this type, a <Section Id> is used. <Section Id> can be one of
three types. It can be the same as the revision name, or it can be some unique name. The following is a list
of sections requiring a <Section Id> and the associated <Section Id> description:
For entity-specific assignments, use the "-entity" option to remove the assignment(s) from the specified
entity. If the "-entity" option is not specified, the value for the FOCUS_ENTITY_NAME assignment is
used. If the FOCUS_ENTITY_NAME value is not found, the revision name is used.
Assignments removed by using this Tcl command are not saved to the Quartus II Settings File (.qsf) unless
you explicitly call one of the following two Tcl commands:
■ export_assignments
■ project_close (unless "-dont_export_assignments" is specified)
Section Id Description
CHIP Same as revision name
LOGICLOCK_REGION A unique name
EDA_TOOL_SETTINGS A unique name
CLIQUE A unique name
BREAKPOINT A unique name
CLOCK A unique name
AUTO_INSERT_SLD_NODE_ENTITY A unique name