[Mark] had a broken TI-83 graphing calculator and an overwhelming urge to play Pokemon in math class. The solution to his predicament, obviously, is to hack a GameBoy color into the body of his TI-83. He gutted the calculator and connected the front buttons to the contacts on the GameBoy. After some cramming and taping bits together, he got it all working. Now he just needs to find a way to make the cartridge a little bit less conspicuous.