Quartus® Prime Pro Edition User Guide: Design Constraints

ID 683143
Date 4/01/2024
Document Table of Contents

1.2.3. Generating Quartus® Prime Settings Files

Quartus® Prime software allows you to generate .qsf files from your revision. You can embed these constraints in a scripted compilation flow, and even create sets of .qsf files for design optimization.

To generate a .qsf file from the Quartus® Prime software, click Assignments > Export Assignments.

To organize the .qsf in a human readable form, Project > Organize Quartus® Prime Settings File.

Organized .qsf File

This example shows how .qsf files characterize a design revision. The set_global_assignment command makes all global constraints and software settings and set_location_assignment constrains each I/O node in the design to a physical pin on the device.

# Project-Wide Assignments
# ========================
set_global_assignment -name SYSTEMVERILOG_FILE top.sv
set_global_assignment -name SYSTEMVERILOG_FILE blinking_led.sv
set_global_assignment -name SDC_FILE blinking_led.sdc
set_global_assignment -name SDC_FILE jtag.sdc
set_global_assignment -name PROJECT_OUTPUT_DIRECTORY output_files
set_global_assignment -name LAST_QUARTUS_VERSION "17.1.0 Pro Edition"
set_global_assignment -name TEXT_FILE blinking_led_generated.txt
# Pin & Location Assignments
# ==========================
set_location_assignment PIN_AN18 -to clock
set_location_assignment PIN_AR23 -to led_zero_on
set_location_assignment PIN_AM21 -to led_two_on
set_location_assignment PIN_AR22 -to led_one_on
set_location_assignment PIN_AL20 -to led_three_on
# Analysis & Synthesis Assignments
# ================================
set_global_assignment -name FAMILY "Arria 10"
set_global_assignment -name TOP_LEVEL_ENTITY top
# Fitter Assignments
# ==================
set_global_assignment -name DEVICE 10AS066N3F40E2SG
# -----------------
# start ENTITY(top)
# Fitter Assignments
# ==================
set_instance_assignment -name IO_STANDARD "1.8 V" -to led_zero_on
set_instance_assignment -name IO_STANDARD "1.8 V" -to led_one_on
set_instance_assignment -name IO_STANDARD "1.8 V" -to led_two_on
set_instance_assignment -name IO_STANDARD "1.8 V" -to led_three_on
set_instance_assignment -name SLEW_RATE 1 -to led_zero_on
set_instance_assignment -name SLEW_RATE 1 -to led_one_on
set_instance_assignment -name SLEW_RATE 1 -to led_two_on
set_instance_assignment -name SLEW_RATE 1 -to led_three_on
set_instance_assignment -name CURRENT_STRENGTH_NEW 12MA -to clock
set_instance_assignment -name CURRENT_STRENGTH_NEW 12MA -to led_zero_on
set_instance_assignment -name CURRENT_STRENGTH_NEW 12MA -to led_one_on
set_instance_assignment -name CURRENT_STRENGTH_NEW 12MA -to led_two_on
set_instance_assignment -name CURRENT_STRENGTH_NEW 12MA -to led_three_on
# end ENTITY(top)
# ---------------