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What exactly is this thing called Nios II (Classic) processor?

Honored Contributor II

In the Qsys in Quartus Prime 16.1 Lite, I have found Nios II (Classic) processor and another entry of a component without the word Classic in it. 


What exactly is this Nios II Classic processor and why should it not be used for newer designs?
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Honored Contributor II

That's the original Nios II (there was a Nios I a looooong time ago). Nios II was improved about a year ago, now called Gen 2, but the old one was left around for backwards compatibility. It should not be used for any new designs and will probably be removed sooner rather than later. 


Horrible naming, but it is what it is.