Viletim's NESRGB

Drakon wrote:

mvsfan wrote:

Drakon wrote:

mvsfan wrote:

Drakon wrote:

mvsfan wrote:

well now ill have a picture as good as this one on my nes. If only i was as good at megaman.

It'll be even better because there's no jailbars or interference.

True but you cant argue with price. i just watched a playchoice ppu go for $84.08 on ebay.

that was unheard of just a month ago. pretty soon people will be selling them for metals scrap.

Smeh, I'm glad.  I want more money forwarded to viletim so he can afford to spend more time making more amazing products like this.

thats very true too. I cant wait to see what he makes next.

I wonder how many nesrgbs were sold in the first batch.

Its a great thing to no longer have to hunt for an rgb ppu and deal with the quirks of it.

Btw that nes in your playthrough video Sounds awesome. Is that the audio circuit on the nes rgb or is that famicom expansion audio or both?

You mean minus infinity?  That's a twin famicom with the low pass filter cap removed:

https://16bitgamer.canadian-forum.com/t336-famicom-audio-fixes

I never bothered with the nesrgb audio circuit since I've already found fixes for the on board audio circuits of these systems. The nesrgb audio circuit doesn't have wiring for famicom carts with audio chips.

I dont own a twin. do you know where the fix would be for a top load nes and a toaster? id like to do this to mine.

btw have you tried those 3rd party tomee dogbones? they are good. they look just like the nintendo made ones and they work too.

I haven't tried a third party dog bone.

The toaster sounds fine to me.  The top loader sounds fine too it's just super quiet because the audio amp is built into the rf box so if you don't use rf you get unamped audio.

[quote="Drakon"]I haven't tried a third party dog bone.

Neither did i until recently. Tomee got all the dimensions of the original right it seems. even the curvature on the back is right.

I got in the nes 2 / av famicom adapters viletim made which I sent out measurements for.  I got them early to test them before release to the public and.....













Same adapter works in both the nes 2 and the av famicom.  This adapter moves the kit over so it fits nicely under inside the case.

I cleaned up my av famicom a lot as you can see in the pictures here, I also reverted the pcb changes made for the f-labo kit which is now extinct.

Prototype av famicom is finished:



This system features a new audio circuit that makes use of a modified version of the nesrgb audio circuit and some custom wiring to fix every single audio issue that the av famicom has by default.

what resistors did you use on s-video? Id like to wire mine with s-video also.

also, where is the capacitor between 5v and ground did you not need it this time?

I got an email today that my nesrgb has shipped.

mvsfan wrote:

what resistors did you use on s-video?  Id like to wire mine with s-video also.

also, where is the capacitor between 5v and ground did you not need it this time?

I got an email today that my nesrgb has shipped.

You'll never need a cap between 5v and gnd that turned out to be a loose connection somewhere.  I suggest trying the s-video wiring as it is when it shows up.

You'll never need a cap between 5v and gnd that turned out to be a loose connection somewhere.  I suggest trying the s-video wiring as it is when it shows up.[/quote]
cool. i cant wait to get this in. Ive been playing this toploader lately and its got lots of interference. my other nes has an rp2co4 in it.......

Some new pics featuring the reworked audio circuit:

Speaking of famicoms i remember a while back you had posted a link to a famicom adapter on ebay that had the cartridge facing forward. I tried to find it recently but couldnt.

Do you still have the link to it id like to get one.

mvsfan wrote:

Speaking of famicoms i remember a while back you had posted a link to a famicom adapter on ebay that had the cartridge facing forward. I tried to find it recently but couldnt.

Do you still have the link to it id like to get one.

If it's not linked in the sales thread then the seller relisted it and you'll have to find it.

Drakon wrote:

mvsfan wrote:

Speaking of famicoms i remember a while back you had posted a link to a famicom adapter on ebay that had the cartridge facing forward. I tried to find it recently but couldnt.

Do you still have the link to it id like to get one.

If it's not linked in the sales thread then the seller relisted it and you'll have to find it.

I found it in the sales thread like you said.

I have prepped my nes to accept the nesrgb when it gets here. i cant wait. but i noticed that viletims kit and the adapter dont look like they have the headers pre-attached. was that a cost factor descision? it sure would have saved the end user a lot of soldering.

but whatever, im just glad that the kit is finally here.

He mails the headers with the parts you solder them yourself. Most likely to avoid possible damage during shipping.

Drakon wrote:

He mails the headers with the parts you solder them yourself. Most likely to avoid possible damage during shipping.

good idea though a sturdy cardboard box insert in the envelope would achieve the same.

I used my multimeter and figured out how my on on on switch works. Its wired opposite of yours. the middle position the shunts connect the opposite way, but ive already jumped it and tested it. it works.

now if this kit gets here soon ill be able to choose my palette without cutting and re cutting the hole.

cool thing is that every single connector im using for this project is round.

I also found some panel mount s-video and din connectors for rgb that have screws to mount them so i dont have to glue them. the 8 pin din i found that matches viletims scart cable has screws and it is also prewired.

http://www.ebay.com/itm/8x-MINI-DIN-8-FEMALE-PANEL-MOUNT-SCREW-CONNECTOR-visca-control-cable-socket-jack/370802862352?_trksid=p2045573.m2042&_trkparms=aid%3D111000%26algo%3DREC.CURRENT%26ao%3D1%26asc%3D27%26meid%3D2653905220885858839%26pid%3D100033%26prg%3D1011%26rk%3D3%26rkt%3D4%26sd%3D370574671231%26

wow those av connectors aren't cheap. I find gluing in connectors never bad they can always be removed with zero damage to the case.

I guess I might consider these if there wasn't an minimum quantity order of 8 and shipping weren't $17 to Canada.....

Grambo wrote:

I guess I might consider these if there wasn't an minimum quantity order of 8 and shipping weren't $17 to Canada.....

I bought one lot of these. i put in a low offer and he accepted it.

i guess i have a few extras in case anyone really wants one.


I was reading about some problems people have had with the installation of nesrgb.

Apparently some people are getting the diagonal lines on rgb like a bad snes s-video cable has. The solution is to use csync on the nesrgb - as always.

but some people are saying that they are also getting it on s-video. now thats probably just a bad cable right?

I wish i had mine to mess with. it seems like everyone is getting their kit now.

I got my nesrgb and installed it today. Everything is done except i didnt have time to wire up the Rgb socket.

I hooked up composite though and it works great this is the cleanest composite ive seen out of a nes.

Also looks like everyone is right you dont need the extra voltage regulator - i hooked up the nesrgb to the internal regulator and its been running very cool a lot cooler than a nes with an rp2c03 in it.

i also used the on on on switch. palette selection works great.

I will post some pics of it when i get the rgb socket/svideo done.

Yeah viletim was careful to use parts that consume the smallest amount of power possible.

First picture of a game running on my nesrgb.

I just looked up the pinout for the x-rgb mini connector so i should have the rgb working tomorrow. thats what i wasnt clear on.

the colors of the wires on the port i bought dont match up but i knew that beforehand.

I also think i have the audio hooked up wrong.

oh well all for tomorrow.

Looking good!

any ideas why the audio doesnt work? did i tap the right pins on the cpu?

The audio inputs a / b connect directly to cpu pins 1 / 2.  The output pin (I forget what it's labelled as) goes to it's own rca jack.  Did you remember to wire up ground to your rca jack? Also I'd remove some of the solder on the ground pin to remove the chance of it shorting with the +5v pin right next to it.

well - I get nothing out of rgb except a flickering purple screen.

im going to try hooking up s-video.

Composite works great !

i get composite at the same time i get a purple screen out of rgb.

Well composite is working so thats telling me that the nesrgb is recieving the right signals through the ppu socket and everything should be working on that end of it since its being generated by the fpga.

From this on fpga generated composite



to this on rgb