building an OS (all streams)

Currently Playing: building my own OS in c++ (week 133, bootloader upgrade)

tldr: I want to hear your systems programming challenges. DM me =) [contact below] #livecoding #operatingsystem #coding hey everyone - I’m trying to learn how I can be more helpful to this community beyond just streams. I’d like to talk to some people about their challenges in the world of systems programming, whether they're technical, career, or anything else. If you’re interested, just DM me. thank you 🙏 contact: Discord (mm64k) Instagram (offlinemark) Email (mark @ offlinemark.com) -- 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 00:04:20 Session roadmap: warm-up task and timer interrupt as main goals 00:12:03 Identifying global variable problems in integration test code 00:15:44 Proposing a local context pointer solution to eliminate global variables 00:27:21 Implementing the local context pointer in the create_task API 00:46:55 Testing and verifying the implementation successfully removes global variables 00:58:42 Extending local context to the kernel run API using a task info struct 01:34:19 Beginning research on LAPIC timer interrupt as next major OS milestone 02:21:28 Attempting Limine bootloader upgrade to enable modern APIC initialization 03:02:36 Stream wrap-up and closing remarks