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I want to design PCB board by myself,so the pin assignment should be changed,so the .CSV is different from the DE2 board ,for example :clk_50 ,change the pin assignment from PIN_N2 to PIN_N1.
so I should make sure the assignment changed is right.how to realize it ?
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rbugalho is absolutely right. Specifically, it is not recommended to change the pin if you are not familiar with the FPGA pins. But if you really want to do, you have to search for appropriate instructions about pin configuration. An example I just found is for cyclone III, the link is
http://www.altera.com/literature/an/an466.pdf You will find "Board Design Considerations" from page 17.
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