Hello is it possible to convert, open corectly and compile old quartus II (8.0) project (for origin cyclone) in quartus prime 18.1 (the target is to programm Cyclone 10 LP).

Hi,

you can use/open the project generated by older version in newer version of Intel Quartus tool but you need to take care of following things,

1. First change device with targeted device once you opened the project
2. If the project consists of IPs/megawizards, need to regenerate in targeted Quartus version.
3. Need to perform Analysis & Synthesis for pin placement for targeted device
4. Do pin assignment as per targeted device pin details
5. Start compilation & generate the programming files for targeted device.

Regards,

Vicky