I have to say, after watching several of your videos, I find all this (pretty much every gadget you own and every thing you seem to do) very, very interesting. The things you do are genuinely interesting to watch. You're a very cool person!

If you are gonna ruin a Nintendo game, better make it a sports game, lol

NES carts are supposed to be pretty complicated because they use 2 separate ROMs or something? Mega Drive is easier but I think the chips and tools needed can get a bit expensive! I'll post vids when I've finished making some repros :) Thanks for watching!

I did this one time. It didn't end well. So thankfully, now that I'm looking into doing again, I found this video. Excellent job squire.

Thanks Ed. Good to hear from you too! Xmas/new year was a busy time! Been taking a bit of a break from making vids. Catching up on some projects and actually playing my games :)

It's an excellent flashcart and very good quality! It's what I use to play games like Shantae which can't be found easily or emulated properly.

Just wiring up the socket took me about 3 hours! lol That includes cutting/stripping/tinning all those bits of 30AWG Kynar wire! It's fiddly and frustrating work! You don't have much room to work with and everything is so damn small! Thanks for watching! And I appreciate you taking the time to comment :)

If your ultimate plan is to make that game look like a normal cartridge, then I want to see the finished product. Never stop doing what you do. I believe you could work for Nintendo.

Hi there' I've been watching your videos for a littlw while now(about 4-5 months since I first discovered your channel) Just thought I'd say great videos and projects. It makes me want to start more hardware based projects, no idea where I'd start but I thought it be cool to mention you're a source of inspiration for me in a sense! Keep up the great vids and projects!

Okay everyone asking for a gba or 3ds version while the gba version is possible it is more complicated than swapping chips mainly for two reasons is that the gba is not 8-bit meaning that different chips are used plus you need to have some other chips to do talking between the flash memory and gba.....3ds is out of the question EXCEPT gateway 3ds BUT since the Ds nintendo put in security checks so to prevent people from doing this (and home brew) as this causes them to lose money. To bypass this security you need an exploit which are screw ups in hardware or software that allows you to bypass security and run whatever code. Also NO YOU CANNOT JUST SOLDER AN SD SLOT INTO A CART THAT REQUIRES A ON BOARD CONTROLLER ASWELL AS RAM SINCE THE SD STANDARD IS FAR DIFFERENT THAN A SIMPLE GAME BOY ROM CHIP AS YOU'LL NEED A PROGRAM THAT TELLS THE CONTROLLER TO LOAD OF SD THEN WRITE THAT PROGRAM TO A PART OF ONBOARD RAM AND TELL THE GAMEBOY/GBA/DS TO EXECUTE FROM THAT LOCATION OF RAM.

Holy hell dude. I've been keeping tracks of your mods and game collections for a year or 2 and this is the greatest! More nostalgia with that clear game boy pocket as well haha. Thanks for putting out quality videos.

So many people do not know the different between a Gameboy and a Gamboy Color . . . . o_O

Althought these kind of projects are far fetched for us to make, im glad people do it. It's pretty amazing what you did and it makes a great video content. Hope to see more stuff like that. I know this is an old video but i hope seeing more projects in your channel!

Thanks for watching/commenting :)

Thanks for watching! :)

Not to keen on the video game pirating but im amazed at your ability to make something like this

man you are getting a sub from me because when i found your channel recently before i was always searching for stuff like you to on youtube and it is in one big bundle :3

Game saves are stored on the cart's onboard RAM from what I understand. That is why you need a battery to retain the save. The games on my flash ROM's will save provided they support saving and I re-install a battery :P

Haha, well It has taken me several MONTHS to get to this stage :P . But It's actually pretty straight forward stuff. Having a fine tip soldering iron and a steady hand does help though :P. Thanks for taking the time to comment :)

I suppose anything's possible but that's way above of my level of knowledge/skill. And we already have commercial devices like the USB GB Smart card for that :)

Shantae is now on the Nintendo eShop

Thanks for the nice comment! Glad you enjoyed it :)

Very nice!seems too me your soldering skills has greatly improved since I first started watching your vids.awsome job!thanks for shareing your handy work.

Thanks dude! Sockets are usually sold in large quantities and work out to be pennies each. But, you should only need one for your test cart. For the actual repro carts the chips will be soldered direct to the PCB and hidden from view :) . Chip prices vary depending on order quantity. Generally each 4-Mbit chip will cost £1-£1.50. Overall it's quite affordable :) . But soldering all those tiny wires cost me a LOT of time!! :P Lol, baby steps!

Hey Thomas! Good to hear from you! Programmer is very cool. I think it'll come in handy for future projects :) . Surprisingly cheap too!

Dude, this is so awesome ! This is the type of stuff I want to get into. (: you're a genius

Oh jesus I want a repro of Trip World. Very nice work man!

Thanks dude! But I mostly just follow tutorials or use info other people have discovered/posted online. Soldering isn't too difficult to learn either :P

next time I would recommend using a old IDE /SCSI cable to solder up this project. Really cool project. Would love to see a snes prom mod.

I think you need to flash some custom code along with the ROMs to allow selecting which game you want to boot but yes :). These flash chips can be erased and written multiple times using the programmer. Very easy and safe :)

Pretty neat I can imagine that many roms wouldn't work, as they expect different hardware in the cartridges. Specifically the mbc_ chips

Next step - program the FLASH while it is still in the Cartridge - so no chip swapping.

youre like my hero! :) I want to be as skillful in modding one day please dont ever stop doing what youre doing !

The largest capacity flash ROM I could find in a PLCC-32 package was 8Mbit. The Shantae ROM is 4Mbyte so I believe I would require at least a 32Mbit chip to accomodate the whole game. I will probably have to look into different chip types and alternative methods of flashing if I want to make a repro of that game. I'm trying to figure out and learn a lot of this stuff out as I go :P

Very nice project, Shantae is a realy cool game for the GBC.

you sir i ve discovered your channel today watched around 6-7 videos and i have to subscribe !!

holy crap, now you are able to produce your own gameboygames O.O

Your a Legend mate, I also think your a future Skynet employee, so therefore you may bring down this planet!

Thanks. I've posted links in the description that have lots of info on the subject. There's also a KZfaqr called Gerry O'Brien who's already done some pretty good tutorials on making flashcarts :) . I think a GBA version would probably be too expensive and complicated for me. I'll stick with my EZ-Flash for that system :P

7:54 Such a satisfying sound..

If you're going to make repro carts, you should look into replacing the sram with Feram. I can't recall the model number off the top of my head, but there's an feram chip that's a drop in replacement for most sram and pin compatible. By doing so, you can permanently ditch the battery.

Yeah it'll do a whole bunch of different chips. I'd probably need adapters for larger arcade ROMs though.

Thanks Luke. I'm learning a lot as I go with this stuff. It's pretty interesting! :) I'd love to have a go at making some games for my Mega Drive next.

A little off topic, no? :P . But since you asked, I just wired it up directly to an RGB Scart cable. Google JAMMA to RGB Scart for a pinout ;)

Looks like you've saved yourself a lot of *fun*, soldering chips onto board only to find they are faulty ;) Would be funny if you managed to find Shantae in a cheap buy it now listing. But failing that, making one yourself would certainly be a fun project.

This was extremely fascinating to watch!

Excellent way to get those games that are impossible to attain now, especially with the stupid internet/collector prices we have to contend with these days. I recommened flashing SAGAIA it is a great shooter if you can find the ROM.

The programmer looks a bit complicated but the software explains how to set it all up via the medium of big, 'noob friendly' pictures :P. You just pop in the chip you want programmed, select the model number from a drop down menu, hit 'identify' and the programmer tells you everything you need to know :)

1 word for you sir: Amazing.

I'll take a look. I think I might still have one of the working original R4's in my 'to sell' box.

You may be able to get higher compacity chips if you look for PC BIOS chips, newer PC BIOS chips can be 8 MB in size.

Thanks for posting yet another excellent Video, been checking now and again, looking forward to your new vids....

"All I've really done...." Lol man I wish I had a quarter of your skill!

Looks like you can do EEPROMS with that, if you ever want to do arcade boards or even neo geo conversions.

I actually have a original pirate cart of Sonic 3D Blast 5 :D I laughed so hard first time I launched it. I was about to suggest you'd do a repro of Trip World since it's so hard to come by and is such a magnificent game. But I see you already have plans for that :)

i really wanna say thank you im gonna build one myself! if you want any gb gbc or gba prototypes let me know ill get a list of what i got dumped on folders

Most excellent dude, nice work on this!

Will you be doing an update video for these repro carts any time soon? I'd love to see how they turned out!

wow you are just about amazing at anything

Apparently it is possible to destroy the display on a Game Boy by clearing the LCD Enable bit outside of VSync. I wonder how that works...

Lol, they're worth picking up if you can re-purpose them! Hacked roms and unreleased games can be very cool. I've been wanting to try out that Streets of Rage 3 directors cut hack for a while... hmmmm...

So you can re-use these? Sounds a lot like how the Gateway 3DS works now (you can only use one ROM per microSD card in the damn thing).

Wow! That's crazy! I think I'll keep working on a solution to making my own, lol.

Sick project!!! Keep up the good work

Your brilliant,I love your videos .I always learn something. Thank you.

I have a question I plan to buy a Retro Bit console from Amazon my real goal is to put a Hard Drive a 300 g drive to save all my room files n its well over 330 files but I'm not sure if I will need a custom software I have chips for the room n so on to save software but not sure I'm really good when it comes to fixing n putting together but I have no software smarts Help

What happens with the save file after I change the ROM chip, and put another ROM chip with another game in it ?

true labor of love.

can this happen for gameboy advance games as well?

looks pretty nice

Do those modern rom chips not need battery backup, or do saves just not work because the battery is gone?

is it possible to have a version that does this with the gameboy advance? i'd love to play myself some of the well known pokemon rom hacks on actual hardware

I take it you could put multiple games onto one ROM chip if you wanted, providing that the ROM chip has enough capacity on it. If something goes wrong during the flash process is that the end of the chip, or can you force erase the data on the chip and flash it again?

Cool project pal, it'd be nice to play some homebrew titles on the actual system rather than via PC Emulator, I might give this a go myself.

Hi Martin can you please please explain how you converted rgb arcade output to work on a standard UK TV. When you consolised your MVS. I want to replace my broken arcade moniter with a standard TV

Just researching the stuff that interests me :P .There's loads of info floating about the interwebs :)

Hi, i have made a flash cart inspired by your work from a Pokemon Blue (MBC5 , 32kb RAM) and a GBCartFlasher 2.0u. I can read/write the cart just fine(flash and ram), the game starts but when i want to save random chars appear on screen and the game crashes. I verified with Hex editor that the files read/write without errors but...in game still cannot save. Can you point me in the right direction? Thx

So when get this commercialized? What is your kickstarter amount? :P Just sayin.

What would happen if you didn't trip the GBC/GBA switch in the GBA and let a GBA rom run on that?

Saving function will not work if you removed the battery?

8MB is larger than 32 Mb, i am not sure if mark was referring to megabytes or megabits.

Are you going to be doing any more videos on this? It's very cool and I'm rally interested in it and would love to see more videos.

why not use a socket and UV EEPROM? Easily removable and lager sizes? I got the same programmer though...

I really want to try this.

Hi. I like your hardware projects videos. I work with software mainly but I have built some dev boards for various things. Anyway, Have you looked into game code to make changes? I would be interested in seeing one of those projects, if not a homebrew sample.

So will this work with pokemon games? Because the gb smart cart thing won't. I wish I had known that before I bought one

only with gameboy color cartridge?

Awesome job, man!

I've seen that you have and lsdj rom. Do you know what specs need the cartridge to be flashed and played?

RetroGameTech How many mb in space this chips hold can I have the model of the chip :?

hello, I'm ready to make my own cartridge :), but I have a question, can I use any chip of 32 put 4mb ?, I have a winbond of the same characteristics that is described in the pdf, can it work?

Would it be possible to make a micro sd slot on the cartridgeand load games onto that so you could have crazy memory for games?

Thanks. Yeah I have all the other GBC games from WayForward and most of the GBA ones too! :) I'd love a real copy of Shantae but that's extremely unlikely to happen, lol. I'll build my own!

Retro bit console I ask bout software I also wanna no can I install a Gba emulator on my harddrive n get it to work on retro bit console wit software

Way above my level of knowledge/skill/bank balance :P . These devices also already exist in the form of EverDrives

I own a gameboy color pokemon yellow edition that has no sound. Do you have any ideas on how to get it to work properly? Thanks.

I accidentally sent that comment before finishing it. On the subject of flash carts, do you still have any of those r4 cards? Both of mine have packed in and they're getting pretty hard to come by.

Can you give a tutorial on how to mod the cart to use the parts and where to buy the parts from?

have you considered trying to install a micro sd slot onto the cartridge ?

Awesome, Trip World.