Going on what's become my annual foray into #osdev with #zig. For something different this year, I'm focusing on #RISCV.

I am frustrated and want to make my own #rust kernel. For that I want linux. But my own distro. For that I want my own package manager. Help I’m stuck in „do it yourself“ hell.
Aside: do you #osdev guys maybe know a place where to ask about os things? I know that there are great resources like wiki.osdev.org but asking some questions directly would be awesome.

I was interested in how #Apple had designed their "universal binaries", which are #binaries that can run on multiple architectures, so I did some research on how they work. They are surprisingly simple, almost disappointingly so. I wrote more details here:

https://www.herbstfuchs.com/posts/universal_binaries

Auch auf Deutsch.

#macos #programming #osdev #c #deutsch

My x64-based OS contains now a fully working FAT12 driver. Check-it out here: https://github.com/SQLpassion/osdev #osdev #internals #assembler #lowlevel #linux

structure and interpretation of ark https://wingolog.org/archives/2023/05/02/structure-and-interpretation-of-ark | https://lobste.rs/s/amrldo #android #javascript #mobile #osdev

I've been lurking and reading posts, so it's probably time for an #introduction.

Hi, I'm John. I'm a software engineer, with a variety of interests: #programming, #gamedev, #graphicsprogramming, #dsp, #osdev, #emulation, #LowLevel, #webdev, and others. I use #python, #c, and #cpp professionally, but I also enjoy using #rustlang, #typescript , and #javascript in personal projects.

Non programming things: I try to make electronic music, never finish it. Ich lerne auch #deutsch.

A disk is a bunch of bits https://www.cyberdemon.org/2023/07/19/bunch-of-bits.html | https://lobste.rs/s/dbazgr #linux #osdev

Haiku Activity & Contract Report, June 2023 https://www.haiku-os.org/blog/waddlesplash/2023-07-14_haiku_activity_contract_report_june_2023/ | https://lobste.rs/s/24o20f #osdev

Writing a 9P server from scratch https://blog.aqwari.net/9p/ | https://lobste.rs/s/3qn0bx #osdev

smolOS: small OS for MicroPython on ESP8266, RP2040 https://github.com/w84death/smolOS | https://lobste.rs/s/ipztxc #hardware #osdev #python

RSoC: on-demand paging https://redox-os.org/news/kernel-8/ | https://lobste.rs/s/fvpjtd #osdev #rust

The Windows Clock: Why Seconds took Years https://youtu.be/qe1ltXdKMow | https://lobste.rs/s/i0fcfp #historical #osdev #video

Over the last few days I've made a huge progress in the implementation of a full blown FAT12 driver for my OS. It supports now all the major C file I/O functions, which are accessible from User Mode applications through System Calls. A lot of testing happened by the implementation of a simple "copy" function within the Command shell.

The next big step is the implementation of sub directories - instead of working only with a flat root directory ;-) #osdev #internals #infosec #filesystems

This User Mode code looks already quite cool: reading data from a file through a FileStream :-)
The necessary buffer is compile-time allocated, because I don't yet have a User Mode Heap Manager... #osdev #internals #infosec #x64

Over the last few days I've continued with the FAT12 implementation in my x64 based OS. It supports now CreateFile(), OpenFile(), CloseFile(), and DeleteFile().

The Kernel stores now a system-wide list of openend files with the current file pointer position in an internal list. The current file pointer position is needed to support Seek, Read, and Write functions, which are the next big step... #osdev #internals #infosec #x64

Red Hat’s commitment to open source: A response to the git.centos.org changes https://www.redhat.com/en/blog/red-hats-commitment-open-source-response-gitcentosorg-changes | https://lobste.rs/s/x6jhz7 #law #linux #osdev

Putting out the hardware dumpster fire https://dl.acm.org/doi/pdf/10.1145/3593856.3595903 | https://lobste.rs/s/5yihui #hardware #osdev #pdf

My OS can now already create files on the FAT12 partition - by changing the Root Directory and the FAT tables. Testing it is easy, because Mac OS still has *native* support for mounting FAT12 partitions 😉
In the screenshot, the last 3 files were created within the OS - running on my Lenovo W510 notebook :-) #osdev #assembler #internals

The Unholy Saga of Phoenix Hyperspace https://gekk.info/articles/hyperspace.htm | https://lobste.rs/s/g9lr7l #osdev

Redbean Systems https://redbean.systems/ | https://lobste.rs/s/bsnekr #osdev