building an OS (all streams)

Currently Playing: building my own operating system in c++ (week 98, virtual memory)

(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 00:01:56 Virtual memory project overview and current goals 00:09:02 Opening Intel manual for page table structure reference 00:28:02 AI-generating C++ struct definitions for page tables 00:42:13 Beginning manual implementation of the map function 00:59:23 Starting to refactor code into generic helper functions 01:15:02 Implementing get_next_page_table template function 01:41:30 Writing and testing basic unit tests for map function 01:58:39 AI suggestion for simulated physical memory allocator 02:16:20 Final testing, wrap-up, and stream conclusion