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AR_A_Intel
Super Contributor
5 years agoHello,
Good day
Welcome to INTEL forum. In C10 GX dev kit user manual table 13 (board reference of D21 is referring to actual LED on board that’s called D21 as shown in schematic page 33, this is not referring to FPGA pin location)
For Quartus design pin assignment – by tracing the LED D21 is connected to which FPGA pin location based on the connection signal name “USER_LED2”. This lead to FPGA pin AC6. In your case, you needs to assign FPGA pin location = AC6 in his Quartus design, not D21.