Operating systems notes
The Hardware an OS Drives
The CPU, memory, interrupts and devices every OS abstraction is built on. Every section is a drawn page beside a clear written explanation, about 18 minutes in all.
- Chapter 3 of 37
- About 18 minutes
- 8 sections
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In this chapter
- Why an OS engineer must know the hardware
- The CPU & its registers
- User mode vs kernel mode (privilege rings)
- The memory hierarchy
- Interrupts & traps
- The clock / timer
- I/O devices, controllers & buses
- DMA & the big picture
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