Template repository to get started executing multiboot payloads on a Nintendo GameBoy Advance. Most of this code was taken from https://github.com/cartr/MSMCcable. I just cleaned it up, updated the gba-multi-cable to compile with more recent version of Arduino. I also updated/created a set of Makefiles to make everything compile correctly.

See below for description of each directory and the projects within it.

Small GBA program to load a larger GBA program faster using the GBA's UART mode. This loader is loaded initially via GBA's multiboot protocol using the gbl tool.

Small Arduino program that interacts with gbl to first load 2ndloader, then loads the "real" payload over the UART interface.

Example GBA program that can be bulit and uploaded using the tools.

Simple linux program to interact with gba-multi-cable and 2ndloader

To build everything, you will need some dependencies:

• platformio for the gba-multi-cable project
  • pip install platformio
• devkitpro for the 2ndloader and template_mb projects
  • installation instructions
• standard linux utilities
  • make
  • gcc
  • perl

Once everything is installed, simply call make to build everything. If it was successful, call make burn to burn the gba-multi-cable project to the arduino Nano. (the arduino must be plugged into the PC). PlatformIO should auto detect the serial port. After that wire up your multiboot cable, then you can use the tool:

./gbl -p/dev/ttyUSB0 template_mb/template_mb.gba

Below is a table for wiring up a multi-boot cable. Note the colors may differ for your particular cable.

See each folder for it's individual license. The original repository also contains license information here