Converting a BDF diagram to HDL for simulation in Quartus Prime Pro >= v20.4 - Converting a BDF diagram to HDL for simulation in Quartus Prime Pro >= v20.4 I have a legacy .bdf in my design that I need to simulate. In Quartus II, I could do this with File | Create/Update | Create HDL Design File for current file . In Quartus Prime Pro 20.4, this option is disabled with the .bdf open as the current file: Is there another way to generate an HDL file from a .bdf with the current tools? Quartus Prime Pro 20.4 is able to synthesize this .bdf. Thanks, Paul Replies: Re: Converting a BDF diagram to HDL for simulation in Quartus Prime Pro >= v20.4 Thanks, Richard. I appreciate your help with that. Paul Replies: Re: Converting a BDF diagram to HDL for simulation in Quartus Prime Pro >= v20.4 Hi @pnp Thank for confirming the answer that I have provided previously. I believe another agent will look into your other case and they will help to address your question soon. With that, I will now transition this thread to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you. Best Regards, Richard Tan p/s: If any answer from the community or Intel support are helpful, please feel free to give Kudos. Replies: Re: Converting a BDF diagram to HDL for simulation in Quartus Prime Pro >= v20.4 Richard, Thanks for confirming that. I will keep this in mind--it gives me even more motivation to rewrite these old modules in SystemVerilog I was able to get to the cause of my issue through the use of SignalTap instead of the simulator, which I posted here . It looks like that bus reversal may be a bug in the software. Regards, Paul Replies: Re: Converting a BDF diagram to HDL for simulation in Quartus Prime Pro >= v20.4 Hi @pnp Unfortunately, Quartus Pro does not support this feature a few years ago. The current workaround is to convert it in Quartus Standard Edition and add the HDL files back to Quartus Pro. It is a bit tedious and I am sorry if it cause any inconvenience. Best Regards, Richard Tan p/s: If any answer from the community or Intel support are helpful, please feel free to give Kudos.