Forum Discussion
Altera_Forum
Honored Contributor
8 years agoThe last version of Quartus to support Cyclone III was 13.1. Here's the device support list:
https://dl.altera.com/devices/ There are links in the list to download the version you need. I have not used AHDL in more than 20 years but I think/assume Quartus still supports it. Good luck!