Ok before you start ranting on about how the R4 or any other Ds flashcart can't run gba files or that it doesn't have an emulator. I've already done my research and everywhere I looked, I saw threads about if there are any and everyone says the same exact thing 'No there isn't use a 3-in-1 gba flash cart, and etc.' but I want to know is 'why isn't there a gba emulator and/or why is it not .gba compatible?
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How is it possible that people have made emulators or NES,GB/GBC, Genesis, and N64 (which in my opinion is far more superior than the gba) but no one has made a gba emulator for DS flashcarts?

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Just because we have a DS doesn’t mean we don’t want to play some older portable Nintendo games. While we could play the original Gameboy cartridges on our Gameboy Advances, the Nintendo DS doesn’t afford us that luxury. However, with a little emulation power, we can resolve that issue and make your portable gaming life even better.

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GBA on DSi and 3DS. Play Gameboy Advance Games (GBA ROMs) on Nintendo DSi with the help of a DS iPlayer card and DSi-GBA emulator. Download GBA games to microSD card.
Unfortunately no. The DS can only play gba games using slot 2. And it can't emulate gba games on slot 1 (aka your r4) because it would require to much to run.

While GNUboy DS (aka DS_GBC / DSBoy) was the first Gameboy emulator for the DS that had sound support (there was also the GBA-based Gooba Color), Lameboy quickly rose to victory as the superior emulator for the classic Nintendo portables. Lameboy is constantly being updated (last update as of this writing was just a few months ago) and has excellent compatibility, sound emulation, and save state support that its competition can not boast of. There is still some slight room for improvement, but I think you will be pleased by how polished Lameboy actually is. Along with nesDS, it is on the top of the Nintendo DS Emulation family.

Hi guys, Tech James here, In this tutorial, I will be showing you guys how to play GameBoy Advance ROM’s off any R4 Flash Card! This works on DS/DSi/3DS/2DS, CFW might be required to run an R4.

Easy Installation

After some of my frustrating experiences getting some of my GP2X emulators to run, I was very happy with the simplicity of the Lameboy installation. Assuming your homebrew cart doesn’t require patching, all you do is download the executable file and put it in a folder with some Gameboy ROMs. (Actually, you don’t need folders, and your ROMs can be elsewhere, but folders usually help keep things organized)

For my CycloDS Evolution cartridge, I just copied over a folder (named “GB”) that had the executable and my ROMs on to MicroSD card, popped it in my DS Lite, and I was good to go. No configuration is required to get things up and running. If you have an older homebrew solution, you may need to patch the executable before use.
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Video Tour of Lameboy

To get a better feel for how Lameboy handles, I’ve recorded a quick video that walks through some of the menus and shows a few games in action.

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Lameboy’s Best Features

High compatibility
Full speed for most games
Support for large games greater than 2 MB in size
Zipped ROM support for games smaller than 2 MB
“Fast Mode” with L-trigger
Auto save on exit to menu
Pseudo bilinear upscaling mode
Super Game Boy borders and coloring support
Rumble emulation with slot 2 devices with rumble
Green color scheme option emulating original Game Boy color palette (green to very light green)
Configurable X/Y Keys
Save states

Complaints & Limitations

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I can’t seem to exit out of Lameboy and go back to my CycloDS menu (like I can with regular games)
Some games like Shantae have some minor audio processing issues (see video above for Shantae example)
Would be cool to have a rewind feature like nesds

Download

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Note: Special thanks to Ivo for helping me explore all of the emulators for the DS — you should see more of these posts from us in the future.

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