Game Boy Cartridge plus Programmer

http://gbdev.gg8.se/wiki/articles/GBDK_Joypad_Tutorial

http://gbdev.gg8.se/wiki/articles/GBDK_Sprite_Tutorial

http://www.retroisle.com/others/nintendogameboy/Technical/Firmware/dev.php

http://gbdk.sourceforge.net/guidelines.html

http://swelectronics.co.uk/Gameboy/images/Opcodes.htm

http://fms.komkon.org/GameBoy/Tech/Hardware.html

Code that works and exists! so many 404s. Whenever I find better / more tutorials I will add them here.

First - get homebrew if you haven't.

http://brew.sh/

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

brew install wget

Then follow this for installing gbdk, or do what's in the box.

https://github.com/dunn/homebrew-formulae

brew tap mistydemeo/formulae
brew install --HEAD mistydemeo/formulae/gbdk

Then start a new.c file with your text editor of choice

nano new.c 

and copy this example I borrowed from the credited site

// http://www.loirak.com/gameboy/gbprog.php

#include <gb/gb.h>
#include <stdio.h>

void main()
{
        printf("Welcome to GAMEBOY\nProgramming");
        printf("\nPress Start");
        waitpad(J_START);  // other keys are J_A, J_UP, J_SELECT, etc.
        printf("\nIsn't it easy!");
}

Run the compiler

lcc -o new.gb new.c

Lastly, get mGBA to emulate your "game" - example

and after you hit [ENTER]

Almost every pin is in use or broken out! I've ran all checks that eagle offers me, but I refuse to order because of the time!

There'a a via on the power line on the right o.O - fixed

So beautiful! - Sometimes I only upload them to see what they would look like :3

This is the LCD board that I also have to check again and order soon, not just this evening. It makes sense to have this separate, since the game boy classic also had a separate lcd board - so that's what I do, staying original :D I should make one pin header side 5V and one 3.3V and add some level converting stuff, before I order.

Too. Much. Overkill. what started as a basic teensy++ 2.0 based cartridge reader/writer is now a full blown project with a nokia 5110 LCD display with rgb backlight, 3D printed, vintage looking case, pcb for an at90usb1286. At least in my head. Please. Somebody stop me.

I slept a night (read: 3hours) over it, I'm going to cut off the display part and will make it a separate board with mounting holes. Furthermore I will find another crystal and button and rearrange everything.

http://hackaday.com/2014/12/30/game-boy-cartridge-emulator-uses-stm32/

https://www.insidegadgets.com/2011/03/19/gbcartread-arduino-based-gameboy-cart-reader-–-part-1-read-the-rom/

http://hackaday.com/2016/08/21/fly-with-a-game-boy-classic/

http://www.thingiverse.com/thing:107841