Wikipedia quotes this statement from Intel's manual The functionality of A20M# is used primarily by older operating systems and not used by modern operating systems. On newer Intel 64 processors...

In my opinion: soft reset: boots from the reset vector. hard reset: pull the electrical level of the cpu.

Does anyone know how to get start with writing a program to access, say, an intel memory controller hub, such as the intel 5400 mch or the intel p45 mch? Do I need Intel's Parallel Composer studio ...