You think I can adjust lookup gap with a knc titan for instance?
no, but with a specially designed (futureproof) Scrypt-N ASIC. It's absolutely possible to design one.
and this is why I don't like people claiming that Scrypt-N is ASIC-proof. Nothing is ASIC-proof.
Christian
+This.
How many miner devs does it take all saying the same thing before people will believe it? :-)
Implementing nearly any algorithm on an ASIC is merely a matter of time and money. The hardware surrounding that ASIC may look more (lots of RAM) or less (entirely in SRAM) like a general purpose computer, but for anything you can imagine, there will always be some efficiency gap from a CPU to an ASIC that, if the money is right, will incent someone to do it.