Forum Discussion
Altera_Forum
Honored Contributor
20 years agoMost likely a hardware issue (rare for those words to come from my mouth http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile.gif ). Debug your hardware I/O (make sure the unused I/O setting in Quartus is set appropriately for your board (Nios boards need 'set unused I/O to input tristate'), make sure you assigned the I/O properly, make sure you meet timing, etc....)