NIOS II cannot run from an external memory QSPI? - NIOS II cannot run from an external memory QSPI? I've created the design based on this document but it is not working https://www.eeweb.com/app-notes/download/169865 Replies: Re: NIOS II cannot run from an external memory QSPI? I was using external clock for the Qspi block once I used the PLL it is working now. Replies: Re: NIOS II cannot run from an external memory QSPI? Hello. I would check the following items: 1- Make sure Nios II reset vector and exception vector are both pointing to QSPI 2- Make sure you use 25MHZ clock as maximum to the QSPI IP. 3- Try to use PLL for your system clocking. One clock would be for the system. Please let me know if any of the debug steps would help.