Look at this

That's a 1Ghz arm11 pi zero running n64 games. It's a slidshow. The new3ds is 800Mhz arm11. The extra cores don't help.
You really need a 1.2+Ghz armv7 to even get ok emulation for the n64.

I know you say you would be "eternally grateful", but that's not enough to get someone to try such a difficult task
https://github.com/machinamentum/CTR64
Has already tried and he didn't get far enough to boot games even.

 

Back in the day i tested an early alpha of a N64 emulator for the 3ds (I no longer have the files) and it was running so slow that there was no way you were able to play games on it. The guy I was testing it for stoped working on it after he was not able to speed it up and get most games booting on it.
I don't think it would really change on the new 3ds xl.

 

You've made a very good point there!

But the (S)NES Classic has an ARM CPU just like the 3DS, so the MIPS to ARM dynamic recompilation code should remain the same.

I'll capture some footage of N64 games running on my SNES mini so you can judge it's performance, hopefully that will help!

 

You hurt me

 

Having a higher clockspeed isnt the only thing that decides power. If that were true then the 3.1 GHz core2 duos of old would be much more powerfull the the 1.7GHz i3s pf today. And as far as Wii being weaker than the New 3ds, I'd recommend you watch the digitalfoundry video of Xenoblade Chronicles comparison between the original the the New 3DS port. A lot of corners had to be cut to port a wii game to the New 3DS. I personally think that the New 3DS is weaker than the Wii by a good margin.

 

You just made my point for me. stating MHZ as a basis for a point in 1 post and then countering that point in the next one. As a general rule of thumb Nintendo handhelds have always been 2 generations behind their home console hardware (barring the switch which I still believe is a handheld console with an HDMI pass through dock). So by that standards the 3DS would be between the N64 and the Gamecube power wise. Emulation takes a lot more resources than the original hardware your'e trying to emulate. And regarding the newer tachniques, you're right. But they rely on minimizing resource usage to give optimal performance, The same techniques could have been applied for xenoblade which they practically had to make from scratch (assets wise). Just saying if it were the case, Xenoblade Chronicles would've looked a lot better.

 

Gamecube 485 MHz
3DS 800 MHz what could possibly go wrong?

 

Im pretty sure it is possible, take a look at this. It runs fairly well to me and the n3ds might do even better depending on the multicore usage of mupen64+ if there is.

 

I was under the impression that each n64 games required very specific emulation techniques. Thus the reason for such poor emulation across the board, with exception to the more popular games.

 

That's because Nintendo develops emulators that are extremely accurate, and thus take up more resources. Their goal is so that if the same inputs are put into both an actual snes and an emulator, they will both end up at the same point.