Forum Discussion
Altera_Forum
Honored Contributor
19 years agoIt sounds like pin assignment problem.
You should check your quartus compiled pin out file, .pin , with your netlist. And make sure you have the correct pin out. I use simple perl script to generate pin assignment / contrain for fpga , and netlist for PCB layout. I never use the netlist approach in sopc builder. You can use pin planner in quartus to place the pins manually. Or you may try Quartus II 6.0 and Nios II 6.0, which may have better result with PCB netlist. You must have helloworld and memtest passed, to verify your board is working fine. You must be able to load and run program from sdram.