GBA Homebrew Development

Game

Piano on GBA

Piano on GBA is a piano emulator on Game Boy Advance.

Demo	Source Code

Engine

GBALVNS

GBALVNS is a Visual Novel / AVG / ADV / Galgame engine on Game Boy Advance.

Demo	Source Code

SS6PlayerForGBA

SS6PlayerForGBA is a 2D skeletal animation engine on Game Boy Advance. It works with OPTPiX SpriteStudio 6.

Demo	Source Code

Library

libsavgba

libsavgba is a library to access backup media on Game Boy Advance. It supports all save types and works with flashcarts and emulators.

Save Type	SRAM	EEPROM(512B)	EEPROM(8KB)	Flash(64KB)	Flash(128KB)
Flashcarts
EZ-FLASH OMEGA	✔	✔	✔	✔	✔
EverDrive-GBA X5	✔	✔	✘	✔	✔
SuperCard MINI SD	✔	✘	✘	✘	✘
Emulators
mGBA	✔	✔	✔	✔	✔
VisualBoyAdvance-M	✔	✔	✔	✔	✔
NanoBoyAdvance	✔	✔	✔	✔	✔
No$GBA	✔	✔	✔	✔	✔
VisualBoyAdvance	✔	✔	✔	✔	✔

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Documentation

Source Code

libgbabackup

libgbabackup is a library to access backup media on Game Boy Advance. It supports all save types and works with flashcarts and emulators.

Devices	EZ-FLASH OMEGA	EverDrive-GBA X5	SuperCard MINI SD	mGBA	visualboyadvance-m	NO$GBA	VisualBoyAdvance	NanoBoyAdvance
sram	✅	✅	✅	✅	✅	✅	✅	✅
sram(fast)	✅	✅	✅	✅	✅	✅	✅	✅
flash(512k)	✅	✅	❌	✅	✅	✅	✅	✅
flash(1m)	✅	✅	❌	✅	✅	✅	✅	✅
eeprom(4k)	✅	✅	❌	✅	✅	✅	✅	✅
eeprom(64k)	✅	❌	❌	✅	❌	✅	✅	✅

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Source Code

libsysgba

libsysgba is a library to implement standard system calls to support C/C++ standard library functions such as file I/O and fstream. It can also access backup media as a file.

int fd = open("xxx.txt", O_RDONLY);
read(fd, dest, size);

int i, j;
FILE *fp = fopen("xxx.txt", "r");
fscanf(fp, "%d %d", &i, &j);

std::ifstream fs("xxx.txt");
std::stringstream ss;
ss << fs.rdbuf();

int fd = open("sram:", O_RDWR);
int fd = open("eeprom:", O_RDWR);

FILE *fp = fopen("sram:", "r+");
FILE *fp = fopen("eeprom:", "r+");

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Source Code

Kernel

omega-kernel

omega-kernel is a custom EZ-FLASH OMEGA Kernel with new features such as running ELF and debug print.

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Source Code

Toolchain

build-your-own-gba-toolchain

🤓 Build your own toolchain for GBA homebrew development!

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Source Code

Tool

detect-save-type

detect-save-type is a tool to detect backup media type.

Download

Source Code

Tutorial

gba-dev-best-practice

gba-dev-best-practice is a series of videos to share best practice for GBA homebrew development.

Read	Source Code

Resource

gba-free-fonts

gba-free-fonts is a series of easy-to-use free fonts for GBA homebrew development.

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Repo