Intel® Quartus® Prime Software
Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)

Post Synthesis Netlist

Altera_Forum
Honored Contributor II
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I'm refreshing myself on Quartus tool flow (haven't used it in years), and was wondering how to generate the Post Synthesis Netlist file for use in simulation. According to QTS_QII51008 (Figure 16-1), I should be able to generate it right after synthesis. However, within the tool, the only option I seem to find is to use EDA netlist writer to generate it, which requires the Fitter to run (which takes over 2 hours for my current design). I'm currently validating functionality and constantly adding in changes, and would like to avoid a 2-hour turnaround time to validate each change. Is it possible to generate a post-synthesis netlist by ONLY running synthesis? 

 

 

FYI, I have found the following similar thread: 

 

http://www.alteraforum.com/forum/showthread.php?t=23339 

...which indicates that I should set "Generate Netlist for functional simulation only". However, this still seems to require Fitter to run.
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Altera_Forum
Honored Contributor II
635 Views

I have found the following thread: 

 

http://www.alteraforum.com/forum/showthread.php?t=23339 

 

...which indicates that I should set "Generate Netlist for functional simulation only" . However, doing this STILL seems to require that fitter runs.
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Altera_Forum
Honored Contributor II
635 Views

Why are you doing a post synth simulation, and not an RTL simulation to validate your changes?  

With good design practice and good timing specs you should never need a timing simulation. RTL simulations run MUCH faster than post synth/fit simulations. 

 

10 years in FPGA design - not a single netlist simulation yet...
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