OS dev[1] has a full page on how to do this and more, as well as links to sample code, etc. Unfortunately it's down right now, so here's a webarchive link from

OS dev[1] has a full page on how to do this and more, as well as links to sample code, etc. Unfortunately it's down right now, so here's a webarchive link from 1st Sept[1.5] A resource you'll find immensely useful is ctyme's interrupt jump table[2][3], which is easier than reading Ralf Brown's ASCII formatted notes[4]. Of course there are easier ways to do it, but printf() debugging (or the assembly equivalent) is still by far the easiest to set up. If you want to go write code for modern systems -- UEFI code, you can find a tutorial here[5] (I didn't write this, however, so I don't know how good it is, I can't find the resources I used :c), and the EFI spec here[6] [1]: https://wiki.osdev.org/Main_Page https://wiki.osdev.org/Main_Page [1.5]: https://web.archive.org/web/20200901014356/https://wiki.osdev.org/Main_Page https://web.archive.org/web/20200901014356/https://wiki.osde... [2]: http://www.ctyme.com/intr/int.htm http://www.ctyme.com/intr/int.htm [3]: http://www.ctyme.com/rbrown.htm http://www.ctyme.com/rbrown.htm [4]: http://www.cs.cmu.edu/~ralf/files.html http://www.cs.cmu.edu/~ralf/files.html [5]: https://github.com/safayetahmedatge/efitutorial https://github.com/safayetahmedatge/efitutorial [6]: https://uefi.org/sites/default/files/resources/UEFI%20Spec%202_6.pdf https://uefi.org/sites/default/files/resources/UEFI%20Spec%2...