Yeah there is one for NES, but I was thinking about Amiga version that looks even beter than arcade. Araiguma works partialy on snemulds but has some glitches and troubles with layer priority. I see, in that case I got a title for my new homebrew: "Another Port that is not"
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Nikokaro
I see. Instead of porting a single Amiga game, why don't you port a whole Amiga emulator: from SD slot of a DSi there should be no lack of ram, or should there? 
plasturion
Amiga emulator doesn't work good even on old 3ds, there's atari ST version of this game that works on less demanding 68k emulator - Styx DS but it works quite slow, maybe this one can be optimized i guess, however not for my skills.
But if it were "something new", it would not be a port.