Perhaps the original author of neoscrypt code meant for it to be difficult to port to nVidia.
and actually doesn't seem to be the case, actually the 980 already beats the 290x/public kernel... (which is around 300kh/s)
Wolf0 answered for you. I thought that the code for neoscrypt may have been obfuscated deliberately in order to hinder its porting to Cuda code, perhaps in response to CBuchner's release of difficult-to-port "Killer Groestl". I'm wondering why development for nVidia is behind, but I am not slighting your efforts.
in that case - what would it take to 'work' on this project to make it worth its weight in gold?
i would be happily pointing my miners to 'donate' for such a project ...
or is there something that could be done in private that would benefit the contributors 'first' before a public release of such optimized code?
#crysx