High Resolution Timers

Application programmers are familiar with functions that allow them to schedule tasks in a timely manner. But how many of them know what is hidden below that? What kind of interaction is taking place among the components starting at the application level, via the kernel - ending up with the Hardware components itself. This is what we are going to reveal here.

MMU and addressing

Memory management in modern CPUs relies on a hardware component, which is called Memory Management Unit or as it is known by its acronym - MMU. This component handles access to memory address ranges. 
There are several implementations of MMU. We will try to  deal with the general concept of the MMU, without referencing to any specific system architecture. 
The provided exercises and examples are intended to help you getting thorough understanding of the subject by practicing.