Hello,
Why?
How am I supposed to run Modelsim-Altera then?
I had the exact same experience when I started to use Quartus.
My solution was/is to have a project open in Modelsim simultaneously with a project in Quartus. Both projects contain the same files.
For a quick compilation - error checking - I run the Modelsim compiler, as it is far faster, but doesn't catch all errors.
I would always simulate directly in Modelsim, but use Quartus to do the main work - actually writing the hdl - as the editor and interface is superior imho.
To see whether or not 'hardware' actually works on an FPGA I run the Quartus compiler.
Btw, the compilation error report is far better in Quartus compiler than Modelsim.
https://www.intel.com/content/www/us/en/programmable/documentation/yur1496247032051.html
Check step 2. I had this issue when I first started with Quartus Prime Lite. Maybe it's a similar issue with the Pro: when fresh installed, there's no EDA tool pre-defined, even if it comes bundled with Modelsim
I will definitely try that!
Leo