if you want to program for the gameboy
see these resources:
http://gbdev.gg8.se/
http://www.devrs.com/gb/links.php
http://gameboy.mongenel.com/asmschool.html
a gameboy assembler:
https://github.com/bentley/rgbds
a post explaining how to compile c code using sdcc for the gameboy:
http://sourceforge.net/p/sdcc/discussion/1864/thread/e04ebcc5/
please note that you will need to write a standern libary
as the only one i found dosent look like it has a license (correct me if i am
wrong) and so is non-free
i email the creator about the licenses and they haven’t got back to me
just be sure to avoid the non-free stuff
also heres a libre gameboy program in asm you can learn from:
https://github.com/AntonioND/back-to-color
