How to ues storage primitives - How to ues storage primitives Hi, all I want to use Storage Primitives, for example SRFF in following site. https://www.intel.com/content/www/us/en/programmable/quartushelp/18.1/index.htm#hdl/prim/prim_file_srff.htm The format of the primitive is shown in the link. However, there is no mention of some pin roles. Could you please tell me where is the documents describing more detail of these primitives? I am using Cyclone V GX Development Kit and Quartus Prime Standard 18.1 on Windows 10. Replies: Re: How to ues storage primitives Dear sstrell, Thank you for your reply and sorry for late reply. The link helps me! Sincerely yours, SYosh17 Replies: Re: How to ues storage primitives Since this thread had been answered, we shall close this thread. If you still need further assistance, you are welcome to post a response within 15days or open a new thread, some one will be right with you. Replies: Re: How to ues storage primitives prn is asynchronous preset, active low. I found this thread about it: https://www.reddit.com/r/EngineeringStudents/comments/2zd17o/flip_flop_simulation_files_in_quartus/ Replies: Re: How to ues storage primitives Dear KennyT, Thank you for your reply. I read the document, but I can't find description about storage primitive(JKFF, JKFFE, LATCH, DLATCH, SRFF, SRFFE, TFF, TFFE). https://www.intel.com/content/www/us/en/programmable/quartushelp/18.1/hdl/prim/prim_file_srff_d1455e140.htm A verilog code example is here. What is the role of "prn" pin? I want to know more detail about these storage primitive. Replies: Re: How to ues storage primitives Hi, You may find the details here https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_low_level.pdf