device file

[Altera_Forum]

hello everyone. 

 I am trying to use QuartusII version 14.0.  you can download device file separately. which is good.  but the other hand, I can not find old devices like "cyclone III" .  do you think you I can get old devices? where can I find those?  thanks in advance.

[Altera_Forum]

Cyclone III is not supported on 14.0 or higher. Quartus version 13.1 is the newest version that supported Cyclone III.

[Altera_Forum]

thanks Galfonz. 

 well, that's bad...  I am wondering, how many versions of QuartusII I should install on my desktop....

[Altera_Forum]

It depends on what chips you want to use. In general, older chips need older Quartus versions. Right now I have 3 versions on my PC. Somewhere on Altera's web site (sorry I don't remember where) there is a document that lists the newest version that supports various families. Try to locate that if you need details.

[Altera_Forum]

Altera's download center (https://www.altera.com/download/sw/dnl-sw-index.jsp) has a suitable tool to determine what version of Quartus you need - see the "Software Selector". 

 Cheers, Alex