My question is if it's possible to redesign the gameboy ds with a similar processor and have it be able to run the games. I wanted to hack the original gameboy and create my own PCBs with specs similar to the gameboy ds but the processor is specially designed for nintendo which means I cant buy it anywhere and there is no datasheet available for it. I could take one of the processors off of an old board but I still have no data on it like pins, registers, ect. How hard would it be to complete this project and is it possible? The processors in the ds lite are ARM7TDMI and ARM926Ej-s. I have found similar processors to these and so is it possible to run a game on one of these similar but not exactly the same processors?