Honored ContributorHi,my board is Stratix 1s40,if i program a sof file which isn't a nios project,the board would just load the user image ,so the stratix board have to run nios project only ?
thx!
Honored ContributorYou need to reserve un-used I/O "as tri-state" in your quartus project settings.
To make this assignment in Quartus: Go to the Assignments menu --> Device --> Device & Pin Options --> Unused Pins tab, and select the option to reserve all unused pins "As inputs, tri-stated". Some background: The Nios dev boards have a feature for implementing and demonstrating remote reconfiguration of the Stratix/Cyclone device. This is implemented by a single IO which is connected to the board's MAX7128 configuration controller - if the FPGA asserts this IO, the MAX device will follow the power-on configuration sequence in an attempt to boot the FPGA with (presumably) a new FPGA configuration stored in flash. However, if this pin is not used in your design, and is not reserved as tri-stated, the pin could (and does) float to tell the MAX device to perform re-configuration.Honored ContributorThank You!!
