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Keywords

os operating system osdev development software assembly machine code cpu registers technology computers x86

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How to implementing a driver for the 8259 PIC, and handle hardware interrupts. Links: - Patreon: https://www.patreon.com/nanobyte - Discord channel: https://discord.gg/RgHc5XrCEw - Source code: https://github.com/nanobyte-dev/nanobyte_os/tree/videos/part10 Documentation: - Intel manuals: https://www.intel.com/content/www/us/en/developer/articles/technical/intel-sdm.html - Interrupts: https://wiki.osdev.org/Interrupts - PIC: https://wiki.osdev.org/8259_PIC - PIC datasheet: http://pdos.csail.mit.edu/6.828/2005/readings/hardware/8259A.pdf Chapters: 0:00 Intro 0:18 What is the PIC 3:29 Deciphering the datasheet 6:41 Initializing the PIC 8:28 Edge and level triggered modes 14:33 ICW1 implementation 16:23 ICW2 17:35 ICW3 18:57 ICW4 19:46 Interrupt prioritization 20:59 ICW4 implementation 21:44 Masking and unmasking 24:28 End of interrupt command 26:33 Reading PIC registers 28:20 Putting it all together 34:15 Conclusion

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