How to FIND QSF file for 5SGXEA7K2F40C2N?

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Either the vendor who created the board has a sample .qsf file from an example project that they supply (check their website), or launch quartus, start a new project and select that device, or create one manually by entering the appropriate commands into a text file (a .qsf file is just a text file with a .qsf extension).

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Thank you for your reply. I am a beginner and trying to use this board and Quartus software. Can you tell me how I can write command for specific board ? If there is link to learn it, and you can provide me I will appreciate your help.

Thank you .