Just playing NES only on the actual console would be a great mr gimmick. 
Either way I like where all this is going!

Does the HDMI NES only use top loaders? The PPU is the same for both systems is it not?

That simply isn't possible with real hardware.  There is no way to synchronize the systems and the internet lag is far bigger than original games are programmed for.  Emulators can (poorly) do it by rewinding the emulation to the point where the two systems diverge.

At first I will be selling as just completed top loaders.  It will work on the lunch box or Famicoms, but needs a different board to get the connectors to the correct spot on the case.  Haven't decided about selling just the boards.  People who can't solder but think they can turn into customer service nightmares...

So if the audio is carried on a separate rca cord, how do you get a tv to output sound when it's on the HDMI input? To my knowledge, TVs typically don't output sound from rca when it's set to an HDMI input. You'd need a separate receiver, in which case you also couldn't run the HDMI through the receiver either because you'll have to have it set to whatever audio input you'd need it on to play sound from the rca plug. Or am I just way off on this?

DVI does not carry audio, so most TVs have a separate audio input (probably shared with composite) in case the user has a DVI->HDMI cable. There are probably some without that input and those people will just need to buy a better TV!

So can we pretty please buy Mr. Gimmick now? Seriously bunnyboy

I made a patch, if you need it bad you can commission your friendly neighborhood repro makers to make you a copy.

Sell the boards and do not offer customer service for DIY installs.  If someone takes the risks, they are responsible for the consequences!  It's not like NES systems are expensive or hard to find, anyway.  Sell the kit for $35-$50, and wash your hands of it.

The only thing I've seen is Kalera (mispelled) servers on my MAME cabinet which I have used to play arcade games with people around the world. There is a NES version so really the only way to do that on a real system would be to pull the Epix Fast Load Cart on the C64 tactic. Full emulator with network support on a cart lol. Not even sure if it can be done. 

The question I have is the new Powerpak going to offer real time saving finally? That would be the only reason that the upcoming Everdrive would have any interest. If yours had that it would squash it.

I did some research and the receiver I'm looking at can do this. Thanks for the tip. It's not all that intuitive, but can be done so people are going to have to read their device documentation on how to do it.

How does this HDMI port handle HDCP issues?

Another option for people whose TV's or receivers can't handle the separate audio input would be to buy an HDMI audio inserter like this one here:

http://www.amazon.com/Digital-Inserter-Embedder-Converter-SP...

That isn't ideal, but it should work for anyone who doesn't have any other option.

I do not generate HDCP so there are no problems with it. Licensing fees are in the tens of thousands per year and I don't care if someone records their unencrypted NES video!

Check out the NES dump(coinheaven). He made me a sweet looking repro of this one. 

http://www.thenesdump.com/screen%...

Oh dude. If this worked for the other systems too (N64, ps1, SNES) i'd be all over this

All I ask for the new PowerPak is on-console savestates. Pleeease

What do you mean by on-console?

As in, be able to use emulator-style savestates on a real NES

That's already possible with thefox savestate mappers.

Man you're not kidding, very sweet indeed. Joe's mended my broken repro heart

Best of luck with your future projects!

It wouldn't make as much sense to do it on any of those consoles since they all output s-video and/or RGB. The NES is unique in that composite is literally the best it can internally generate. There is going to be virtually no picture quality increase with an SNES, N64, or PS1 HDMI connection. The NES is a totally different beast, though, and will benefit tremendously! 

BunnyBoy, as a long time follower and customer of your work, this is the one I am most excited for. No more paying $200+ for a Playchoice 10 PPU and having to build amps and find SCART cables. This is going to be your best work yet, in my opinion. I cannot wait. However, I really hope you offer it for the toaster NES systems and you also allow people to purchase the board without it being installed already! Cannot wait man. Happy New Year!

I really wanted VS Castlevania but am in some dire financial straights right now. Maybe I can get my brother to get me one.

Wow. This news of HDMI NES is hands down one of the most awesome things I've heard on NA period. To be honest Bunnyboy, when you first mentioned your Dream project my first thought was custom/clone/non-playchoice RGB solution, but this seems, as far as I can tell, even much better: the original hardware is even less disturbed and as far as I understand, it preserves the original palette as well! (not to mention the aforementioned cost savings).

Out of curiosity by the way, any idea, how this will work with XRGB Mini that has HDMI input, would there be any benefits? Does this still output 240p via the HDMI or what happens exactly? I understand this is geared mainly towards people who don't use any external upscalers though?

Anyway, my hat is off to you Bunnyboy and all else who've worked to achieve this - if I could put money down for this or sign up somewhere, I would do it this instant. I hope you guys can produce good number of these - I'd imagine demand is going to be high. Any plans to combat this demand btw, like auctioning buying rights for the first patches etc.?