building an OS (all streams)

Currently Playing: building my own operating system in c++ (week 108, kernel threads)

(detailed timestamps in comments) #livecoding #operatingsystem #coding welcome: https://offlinemark.com/welcome discord: https://discord.gg/P6zQBsD2ng Welcome! I’m an aspiring systems programmer. Professionally, I used to work in infosec, but now I work on music production software & hardware. I stream OS/kernel development every week for 2 hours. (I’ve done this for over 75 weeks in a row! Sundays 10a-12 ET) From February 2024 to May 2025, I streamed myself doing all the labs for MIT’s old Operating Systems Engineering course (6.828 (2018)). Through doing this, I became very familiar with JOS, which is the x86 OS used for the course. I had almost no experience with OS development when I started, although I did have much experience with programming and low level concepts. I did the coursework because I wanted to write my own OS, but felt I wasn’t ready. Now, from May 2025 to present, I’m pursuing my own learning agenda with OS development, and starting my on own OS. If this resonates with you, please subscribe and I'll see you in a stream :) 00:00:00 Start 00:03:02 Fixing compiler optimization support and build flags 00:14:19 Demonstrating current kernel boot and functionality 00:21:51 Refactoring code into object-oriented kernel structure 00:42:13 Planning basic cooperative multitasking implementation 00:49:58 Designing task structure and scheduler API 01:06:16 Implementing task creation with memory allocation 01:24:25 Working on context switching mechanism 01:54:25 Writing inline assembly for register state switching 02:04:26 Successfully testing first kernel task execution