In this chapter we are going to discuss two topics.
First, as von Neumann architecture lacks interactivity, the interrupts were introduced to change that. Although we are not diving into the hardware part of interrupts, we are going to learn exactly how programmer views the interrupts. Additionally, we will speak about input and output ports used to communicate with external devices.
Second, the operating system (OS) usually provides an interface to interact with the resources it controls: memory, files, CPU (central processing unit), etc. This is implemented via system calls mechanism. Transferring ...
