Intel® Quartus® Prime Standard Edition User Guide: Third-party Synthesis

ID 683796
Date 9/24/2018
Document Table of Contents

2.4. Precision Synthesis Generated Files

During synthesis, the Precision Synthesis software produces several intermediate and output files.
Table 4.  Precision Synthesis Software Intermediate and Output Files

File Extension

File Description


Precision Synthesis Project File.


Mentor Graphics Design Database File.

.rep 3

Synthesis Area and Timing Report File.

.vqm 4

Technology-specific netlist in .vqm file format.

By default, the Precision Synthesis software creates .vqm files for Arria series, Cyclone series, and Stratix series devices. The Precision Synthesis software defaults to creating .vqm files when the device is supported.


Forward-annotated Tcl assignments and constraints file. The <project name> .tcl file is generated for all devices. The .tcl file acts as the Intel® Quartus® Prime Project Configuration file and is used to make basic project and placement assignments, and to create and compile a Intel® Quartus® Prime project.


Assignment and Configurations file for backward compatibility with the MAX+PLUS II software. For devices supported by the MAX+PLUS II software, the MAX+PLUS II assignments are imported from the MAX+PLUS II .acf file.


Intel® Quartus® Prime timing constraints file in Synopsys Design Constraints format.

This file is generated automatically if the device uses the Timing Analyzer by default in the Intel® Quartus® Prime software, and has the naming convention <project name> _pnr_constraints .sdc.

3 The timing report file includes performance estimates that are based on pre-place‑and-route information. Use the fMAX reported by the Intel® Quartus® Prime software after place-and-route for accurate post-place-and-route timing information. The area report file includes post-synthesis device resource utilization statistics that can differ from the resource usage after place-and-route due to black boxes or further optimizations performed during placement and routing. Use the device utilization reported by the Intel® Quartus® Prime software after place-and-route for final resource utilization results.
4 The Precision Synthesis software-generated VQM file is supported by the Intel® Quartus® Prime software version 10.1 and later.