mirror of https://gitlab.com/nakst/essence
76 lines
2.6 KiB
Markdown
76 lines
2.6 KiB
Markdown
# **Essence** — An Operating System
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Video demonstration as of October 2021, running on real hardware: (YouTube)
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[](http://www.youtube.com/watch?v=aGxt-tQ5BtM "Essence — October ’21 Progress")
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## Links
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For discussion, join our Discord server: https://discord.gg/skeP9ZGDK8.
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Alternatively, visit the forums (not very active): https://essence.handmade.network/forums.
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## Supporters
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To support development, you can donate to my Patreon: https://www.patreon.com/nakst.
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Essence was a recipient of the prestigious 2021 Icculus Microgrant. You can view more details here: https://icculus.org/microgrant/.
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## Testing
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You can download and test the latest nightly build from https://github.com/nakst/build-essence/releases. Download and extract `Essence.tar.xz`. If you are using VirtualBox, import `Essence.ova`. If you are using Qemu, run
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qemu-kvm -drive file=drive,format=raw -m 2048 -smp 2 || qemu-system-x86_64 -enable-kvm -drive file=drive,format=raw -m 2048 -smp 2
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These builds are configured to run on emulators only, to make testing easier. Builds for real hardware are coming soon :)
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## Building
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See `help/Building.md` for a description of how to build and test the system.
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## Features
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Kernel
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* Filesystem independent cache manager.
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* Memory manager with shared memory, memory-mapped files and multithreaded paging zeroing and working set balancing.
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* Networking stack for TCP/IP.
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* Scheduler with multiple priority levels and priority inversion.
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* On-demand module loading.
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* Virtual filesystem.
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* Window manager.
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* Audio mixer. (being rewritten)
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* Optional POSIX subsystem, capable of running GCC and some Busybox tools.
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Applications
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* File Manager
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* Text Editor
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* IRC Client
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* System Monitor
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Ports
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* Bochs
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* GCC and Binutils
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* FFmpeg
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* Mesa (for software-rendered OpenGL)
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* Musl
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Drivers
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* Power management: ACPI with ACPICA.
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* Secondary storage: IDE, AHCI and NVMe.
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* Graphics: BGA and SVGA.
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* Read-write filesystems: EssenceFS.
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* Read-only filesystems: Ext2, FAT, NTFS, ISO9660.
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* Audio: HD Audio.
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* NICs: 8254x.
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* USB: XHCI, bulk storage devices, human interface devices.
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Desktop
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* Custom user interface library.
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* Software vector renderer with complex animation support.
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* Tabbed windows.
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* Multi-lingual text rendering and layout with FreeType and Harfbuzz.
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