I&#x27;m sure people have (tried to), but the problem is that, possible legal issues aside, the RPi is not a relatively standard and widespread system like the PC and Broadcom have not released much in the way of documentation. There&#x27;s so much undocumented, and not enough people willing to go and analyse it all (unlike with the PC).<p>Although PCs are becoming more closed and blobby with each new generation, the legacy of backwards-compatibility means that a lot of things still work like they used to - in the days when documentation was far more open. IBM released the PC with full schematics and source code for the BIOS. The RPi was released with nothing more than its software and a few <i>very</i> incomplete datasheets.