Forum Discussion
Altera_Forum
Honored Contributor
10 years agoQuartus doesn't seem to like the "STRATIX_DEVICE_IO_STANDARD" setting in your constraints (.qsf). You can either remove it or change it to "2.5 V" - the default. The project then compiles successfully. Changing this setting shouldn't have any effect on the result - other than allowing you to get one. That entry is a little unnecessary and can/should be dealt with by adding individual pin and IO standard constraints anyway - as you've done.
Regards, Alex