Tag: OS Dev

Chapter 3 — Hardware Interrupts: PIC, PIT Timer, and Keyboard Input

Posted By: R. MorganPosted On:
Chapter 3 — Hardware Interrupts: PIC, PIT Timer, and Keyboard Input
This entry is part 3 of 3 in the series Writing A Linux Style Operating System From Scratch

In Chapter 2 we taught the CPU how to call our code when something goes wrong: Now we will teach the machine how to call our code when hardware wants attention: This is the first step toward a living kernel. A timer interrupt eventually gives us scheduling. Keyboard input eventually gives us a kernel monitor

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