Pi – Advanced – ARM assembler

For more advanced users this may be interesting
http://www.cl.cam.ac.uk/freshers/raspberrypi/tutorials/os/   –  Tutorial on ARMv6 Assembler,  to build an operating system, well it builds up various topics which once complete the user should have knowledge to put everything together to create an operating system for the Raspberry pi,   head over to the Raspberry Pi forums to communicate with other hackers working through this,  its pretty advanced stuff.   The link is directly to the Bare Metal forum sub topic related to all this.