Configuration of pins is not enabled properly for Cyclone and Stratix Devices

Description

On the Configuration page of the Device and Pin Options dialog box, the Enable input tri-state on active configuration pins in user mode option is not enabled properly. This applies to Cyclone IV GX, Cyclone III, and Cyclone III LS.

Resolution

To enable input tri-state on active configuration pins, use the following assignment in the Quartus Settings File (.qsf):set_global_assignment -name TRI_STATE_SPI_PINS ON.