Forum Discussion
Altera_Forum
Honored Contributor
14 years agoIf you power your board without anything connected to the AS or JTAG ports, does it start and show the welcome pattern? In that case it could mean the USB cable somehow disturbs the communication with the EPCS during power up.
If you do everything through JTAG (load a .sof configuration through the Quartus programmer, load the .elf file through nios2-download, open a nios2-terminal) does it work?