Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

'Illegal directional connection'error in Quartus 8.0

Hi all. Recently I compile a project in Quartus 8.0, it comes out the errors: Error: Illegal directional connection from the node "WPI_MODEL:inst|AnalogFault:I52|data_out[2]" to the pin "XD[...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

I don't know what an "Illegal directional connection" exactly is. Is it a compiler or fitter error message?

I would primarly look for the logic definition and possibly defined pin attributes and other specific assignments. I also would try with a newer Quartus version, e.g. a stable 9.0.