http://www.pastraiser.com/cpu/gameboy/gameboy_opcodes.html

http://gameboy.mongenel.com/dmg/opcodes.html
http://bgb.bircd.org/pandocs.htm
https://github.com/brNX/gameboy-emu
http://forums.nesdev.com/viewtopic.php?f=20&t=10763
http://fms.komkon.org/GameBoy/Tech/Software.html
http://gameboy.mongenel.com/dmg/asmmemmap.html
http://imrannazar.com/GameBoy-Emulation-in-JavaScript:-Graphics
http://hitmen.c02.at/files/releases/gbc/gbc_memorymap.txt
http://gbdev.gg8.se/wiki/articles/CGB_Registers#FF56_-_RP_-_CGB_Mode_Only_-_Infrared_Communications_Port
http://gbdev.gg8.se/wiki/articles/Gameboy_Bootstrap_ROM
http://marc.rawer.de/Gameboy/Docs/GBCPUman.pdf
http://gameboy.mongenel.com/dmg/emu2gb.txt
https://realboyemulator.wordpress.com/2013/01/03/a-look-at-the-game-boy-bootstrap-let-the-fun-begin/