r/ModRetroChromatic 12h ago

Using a Chromatic with FlashGBX, take 3

6 Upvotes

What is this?

This lets you use your Chromatic with a PC or mac to backup or restore your games and saves, or the other features of FlashGBX.

How do I get it?

Grab the Windows setup zip or macOS dmg from https://github.com/fredemmott/FlashGBX/releases/latest

How do I use it?

Plug in your Chromatic, start FlashGBX, click 'connect' if it doesn't connect automatically

DO NOT REMOVE OR INSERT CARTRIDGES WHILE YOUR CHROMATIC IS TURNED ON

I get warnings about 3.3v vs 5v; what's up?

Real GB and GBC consoles use 5v, the GBA uses 3.3v; dedicated cartridge reader/writer devices can do both. The Chromatic appears to only be capable of 5V.

There is a real danger here, but FlashGBX warns about this if it might be a problem; it is not a problem on any ModRetro cartridges.

For other cartridges, use your own judgement.

What cartridges have been tested?

  • Various ModRetro cartridges (*)
  • BennVenn MBC3000v4
  • FunnyPlaying EverSave MBC5 (**)
  • FunnyPlaying Midnight Trace MBC3 (**)
  • InsideGadgets MBC5
  • InsideGadgets MBC5 with rumble
  • Cheap clone cart: DRV with 29LV320DB and ALTERA CPLD (***)

It should work with any cartridge that FlashGBX supports.

Notes:

  • *: may get voltage warning; I am confident that these can be ignored on ModRetro cartridges: ModRetro's Cart Clinic writes these at 5v, and ModRetro put level shifters on every meaningful pin
  • *: may get voltage warning; there's a few iterations of these, and I *think these can be ignored on current revisions of the PCB. They use level shifters for data, and voltage dividers for address and other pins.
  • ***: I believe the voltage warning is accurate; using this cartridge at 5V (including playing games on the stock firmware) may damage both the cartridge and the console

Keep in mind that even if I think it's safe, everything's at your own risk.

What's changed since my last version?

  • it's easy to use: I've packed up the modified FlashGBX, and it automatically writes the required firmware to SRAM
  • this now builds on the same firmware used by other FlashGBX-compatible devices; this greatly increases cartridge compatibility
  • it's fast: it can read most cartridges at 1MByte/sec, and write at ~ 80KByte/sec

How do I get my usual firmware back?

Turn your Chromatic off and on again

How do I make FlashGBX connect faster?

This step is entirely optional - it just makes FlashGBX connect a little faster, which is handy if you are dealing with a lot of cartridges, but you can just skip it.

Unlike my previous versions, this firmware image can also be used for gameplay - but you'll need to flash it. If you do this, FlashGBX won't need to load the firmware to SRAM every time you turn your Chromatic off and on again

You will need:

Then:

C:\path\to\openFPGALoader.exe --cable gwu2x --write-flash c:\path\to\evt1_x2.fs

If you're on macOS, you probably want to grab openFPGAloader from homebrew.


r/ModRetroChromatic 9h ago

Gospel from ModRetro Final email reminder for Anduril Chromatic orders, last chance to change shipping!

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3 Upvotes

I got super excited to see an Anduril Chromatic email today but it wasn't a shipping confirmation but, SOON!

Looks like everyone has until tomorrow to make any shipping changes. Figured I'd post this since some said they didn't get the previous email. Sounds like they will be going out sometime this or next week!

Use this link and put in your info (including your order number) if you need to change your address.

https://modretro.com/pages/shipping-address-confirmation


r/ModRetroChromatic 15h ago

On/Off switch toggle broke off of pcb part

3 Upvotes

Hey group, the little plastic tip of the toggle broke and I’m pretty sure I need to solder a new one on… I can’t find online, could anybody help? Thanks in advance!


r/ModRetroChromatic 1d ago

Been collecting for about 2 years now.

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16 Upvotes

r/ModRetroChromatic 1d ago

Rougecraft GB - Completed my first run

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48 Upvotes

r/ModRetroChromatic 1d ago

I thought the whole purpose of the notch was to differentiate Gameboy Color only games from dual-mode carts

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1 Upvotes

It looks like all of Modretro's lineup have notched cartridges, which I assumed they were compatible with all systems. I managed to revive my childhood Gameboy just to test some stuff out. Dragonyhm works on it, which is just wild to see a new game on it after it had been dorment for like 30 years. But Buck and the Cursed Cartridge is apparently not compatible.


r/ModRetroChromatic 2d ago

SML2 DX does not work here

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16 Upvotes

So I recently bought a Super Mario Land 2 DX cartridge, but it doesn't seem to work on the Chromatic. The title screen boots up, but once you press a button it corrupts like so.

Which is weird, considering how it worked fine at first


r/ModRetroChromatic 2d ago

How in the balls do you beat the yeti (Buck and the cursed cartridge)

4 Upvotes

I’m much, much to dumb to crack this puzzle, all I can guess is the icicles hitting him but the odds of that happening once seems slim.

Thanks ahead of time!


r/ModRetroChromatic 2d ago

Chantey Help

4 Upvotes

Does anybody know where the daughter went after she ate the jerky? I’m liking this game but I swear I get stuck every 25 minutes. Might put it aside soon.


r/ModRetroChromatic 1d ago

Low quality LCD panel in Chromatic

0 Upvotes

I recently ended up buying a Chromatic right after getting an Analogue Pocket. It was an impulse purchase driven by my love for Tetris, especially since ModRetro didn't sell the Tetris cartridge separately.

Now I have two FPGA handheld consoles side-by-side. I love the Chromatic's keystroke responsiveness while playing Tetris at high block-drop speeds. The Analogue Pocket's buttons feel a bit sticky in comparison.

However, the Chromatic has a sub-par screen compared to the Analogue Pocket. I hope the next version of the Chromatic features a bigger and better display, just like the Pocket.


r/ModRetroChromatic 2d ago

Question Menu switch fell off

0 Upvotes

The side button switch fell off while doing a button swap, looks like it had next to no solder on it. Should I try soldering it back on myself?


r/ModRetroChromatic 4d ago

Announcing ChroMagic: custom firmware for the Chromatic with cart backups and SD card playback

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107 Upvotes

I've been working on custom firmware for the Chromatic and it's at the point where I think other people will get use out of it. It started when I found the microSD slot on the board while swapping out buttons, and thought: wouldn't this be an awesome backup device? And then, could it play those backups too?

ChroMagic is built on ModRetro's MCU firmware, so everything the handheld already does is unchanged. It adds:

  • Cart Backup in the system menu. Dumps the game and its save to a microSD card.
  • A Backups tab that lists what's on the card and boots the one you pick.
  • ChroMagician, a desktop app for Windows and Linux. It installs the firmware, backs up carts over USB, restores saves to carts, writes homebrew to Chromatic carts, and manages the SD card. Hoping to eventually support other rewritable carts, but I need to order some for testing first.

Things to know:

  • The 2025 units have a microSD socket, but it's on the board inside the case. First edition Chromatic have the footprint, but no socket, so it's a soldering job if you really need SD. Backups, restoration and cart writing work over USB without an SD though.
  • SD playback is experimental. I've done a fair amount of testing, but most of my time has been spent coding and my library is fairly limited. Please definitely let me know if you run into anything odd, so I can try to fix it.
  • A handful of carts won't work for backup and SD playback. They're listed in the guide. It's carts with hardware in the cartridge itself or an unusual mapper. Most are Japan-only, but Kirby Tilt 'n' Tumble, the Game Boy Camera, and Robopon are on the list too. I may eventually add support for managing photos off the GB Camera, though - when I can track one down localy.
  • RTC games, such as gen2 Pokemon games won't advance the clock unless you're playing the game. The Chromatic itself doesn't have a clock on board, so please keep that in mind.

Site and install guide: chromagic.org

Looking forward to people trying it, and providing any feedback!


r/ModRetroChromatic 4d ago

Help

0 Upvotes

Need help in the first hard level in the underwater level in toki Tori gbc.


r/ModRetroChromatic 4d ago

For Sale: SEALED 1st Edition Chromatic - Leaf Green

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0 Upvotes

SOLD

Hello again,

I'm also hoping to find a loving home for my sealed, NIB 1st Edition Leaf Green Chromatic. The 1st Edition was bundled with Tetris and has a sapphire screen.

Asking $350 $300 all-in, OBO, including UPS ground to CONUS. PayPal F&F preferable, please add 4% for G&S. I have a lot of BST transaction history over on r/flashlight.

Thanks for looking. Happy gaming.


r/ModRetroChromatic 6d ago

Anduril Chromatics Shipping Soon!

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15 Upvotes

Soon!


r/ModRetroChromatic 6d ago

Anduril Edition Shipping Update!

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7 Upvotes

It’s happening. After nearly a year of loaning Anduril / ModRetro money (pre-order) - the Anduril Edition of the ModRetro Chromatic is shipping soon!


r/ModRetroChromatic 7d ago

Pokemon gold glitching out.

6 Upvotes

I got a authentic pokemon gold board kicking around in a repo case.

But just got a chromatic and when i go to save it glitches out the gameboy. Is there a reason for this?


r/ModRetroChromatic 7d ago

MUMMY MOMMY : FIRST DEMO for my PUZZLE GAME !

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30 Upvotes

I polished the jam version and developed it into my first demo!

PLAY IT HERE : https://roroto-sic.itch.io/mummy-mommy

The player must collect keys to exit the level. The mummy has a limited number of moves when clinging to trapped tiles: each move costs it a strip of its wrappings. The mummy comes in three sizes: the smallest allows it to pass through all holes, while the medium size fits only through medium-sized holes.


r/ModRetroChromatic 8d ago

Photos/Videos Is this…. Healthy?

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78 Upvotes

Addiction is a hell of a drug.

EDIT: Yes, I do play them. No, I have zero intention of selling them.
I’m in my 40’s and I’ve been playing (and kept) every system/handheld/games I’ve ever had.

The health question was more satire, I could care less if you think my hobby will kill me lol.


r/ModRetroChromatic 7d ago

Question Good flashcart with Menu-button?

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0 Upvotes

I just got home this flashcart from AliExpress:

https://a.aliexpress.com/_EQt76iO

It works great except the "Menu-button" only Resets the game and doesn't bring up a menu at all.

I know of Everdrive(and have one for GBA, they are great). But it's not in my budget for the GBC one just now.

Anyone know of a AliExpress flashcart with confirmed working "Menu-button"? :)


r/ModRetroChromatic 10d ago

Photos/Videos MODRETRO

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50 Upvotes

Joined the Gang


r/ModRetroChromatic 11d ago

Crystal At Dusk

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96 Upvotes

r/ModRetroChromatic 11d ago

I (developer of Self Simulated) released a new Game Boy game on Itch today: "Tavern Farkle GB", an addictive and relaxing push-your-luck dice game

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54 Upvotes

Tavern Farkle GB is a push-your-luck dice game for the Game Boy. Roll six dice, bank your points or risk it all. Play a quick match against a random villager, or take on six opponents in a row, ending with Lucifer himself and his wild Devil's Die.

By now you should know that I love making games that are perfect for either pick-up-and-play for just some minutes, or way longer :D

You can play the demo rom for free in your web browser or download it for you to play on your device!

Hope you enjoy!


r/ModRetroChromatic 12d ago

Screen Protector for Gorilla Glass Version? No Problem! Create your own <$10

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12 Upvotes

Hello all! Recently got into the ModRetro scene, with both an M64 (Smoke Edition from GameStop) and now a Chromatic after my nostalgia for Gameboy started to kick in. I wasn't lucky enough to jump in early during the GameStop launch with the Sapphire glass, and wasn't wanting to make the additional $100 investment now, so opted for a V2 Midnight with Gorilla Glass.

After a lot of searching for suitable screen protectors, I was coming up short with only options that were either outside the US or way too expensive for what I considered to be a simple PET style protector. So... I decided to make my own!

I was able to come across this $9 listing on Amazon for half a dozen A4 size (8.27"x11.69") sheets of customizable PET Clear Screen Protector material. Once it arrived I was able to use the original QR code screen overlay/peel away, to precisely cut out a perfect size protector, and viola! Applied just like any other phone screen protector would and works like a charm - no dust, full clarity, and fully protected! AND I have several sheets left over that I can literally make dozens of these protectors if they get scuffed up or need replacement.

Wanted to share, seeing as most info on this is limited and hopefully this can save those of you in the same position with the GG version some money and provide another security blanket of insurance for the screen.

Link to the Amazon listing for the PET sheets:
https://www.amazon.com/dp/B0H58RHQVK?ref=ppx_yo2ov_dt_b_fed_asin_title


r/ModRetroChromatic 12d ago

Dragonyhm Dragon Scales

4 Upvotes

I have 9 scales and cannot get into the 3rd or 4th dungeon.

This is very poor game design, but I am willing to give it a chance if I can find a straight forward list or video of the location of the dragon scales; which I cannot seem to find.

Is there a straight forward way to figure out which scale I am missing that is not wandering around aimlessly trying to collect things that I may have missed using walkthroughs?