Forum Discussion
Altera_Forum
Honored Contributor
10 years agoJust to add on, as I did a quick check with the Quartus II software, it seems like Quartus II does not support version selection for Cyclone III devices. I believe there is no way to use Quartus II to generate the lower IBIS version currently. You might need to look into the IBIS model file to see if can edit it manually ie removing 4.1 keywords from it to see if can pass the Altium.