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https://github.com/froggey/Mezzano

An operating system written in Common Lisp
https://github.com/froggey/Mezzano

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An operating system written in Common Lisp

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README 

        
# Mezzano, an operating system written in Common Lisp.



![Screenshot](doc/screenshot1.png)



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## Pre-built images



Demo releases are available through [GitHub](https://github.com/froggey/Mezzano/releases).



These releases are designed to be run in VirtualBox, though QEMU is also supported.

2GB of RAM, a virtio-net NIC and an Intel HDA audio controller are recommended.



x86-64 images are published.  AArch64 has been made to work on some

hardware.  But to set expectations: making Mezzano run on any given

piece of hardware or emulator is still typically a project that

requires the user to dig into the code.



## Building from source



See the MBuild repo: (https://github.com/froggey/MBuild)



For help & support or to follow development, join the #mezzano IRC channel on Libera Chat (irc.libera.chat)



## Major changes since Demo 4



* USB stack by fittestbits

* Improved overall file system support by fittestbits

* EXT2/3/4 support has been implemented by Bruno Cichon (ebrasca)

* GMA950 modesetting display driver

* Hardware accelerated 3D support via qemu's Virgl device

* Multicore/SMP support

* Improved atomic operations

* Async APIs: wait-for-objects, dispatch, and thread pools

* Networking improvements: Server support, DHCP, TCP retransmit

* Source locations are tracked for many kinds of definitions

* Weak hash tables and other weak objects

* Cleanup of object representation and unifcation of standard-object/structure-object

* Unboxed structure slots

* Short floats implemented using IEEE half floats

* Unboxed (unsigned-byte 64) arithmetic

* Stack overflows and memory faults are trapped and can be recovered from

* Support for building on Windows

* Major improvements to CLOS and MOP conformance

* Keymap picker

* More bug fixes, performance improvements and features



## Major changes since Demo 3



* FAT32 support has been implemented by Bruno Cichon (ebrasca).

* McCLIM has been ported by fittestbits.

* Quicklisp has been ported by Peter S. Housel.

* Improved introspection tools: DISASSEMBLE and ED have been implemented.

* Generational collection has been added to the garbage collector.

* New SSA-based compiler backend, supporting unboxed value representations.

* Gray streams support has been overhauled.



## Major changes since Demo 2



* Trentino, a media player, has been implemented by Eugene Zaikonnikov.

* Further improvements to conformance, stability and performance.

* The CLOS implementation follows the MOP much more closely.

* More traditional window management.

* Booting from CD/USB on real hardware is now possible.

* Driver support for Intel HDA audio devices.

* VirtualBox guest (mouse & display) integration.



## Major changes since Demo 1



* Many improvements to conformance, stability and performance.

* The editor has been greatly improved, thanks to Burton Samograd.

* The system now functions correctly on computers with more than 1GB of RAM.

* The allocator and garbage collector now make much better use of available memory, with far fewer GC cycles occuring.

* (ROOM T) prints more detailed information about allocated objects.

* Transparency and premultiplied alpha support in the GUI.

* And more!



## Additional information



"Hypothymis azurea - Kaeng Krachan" by JJ Harrison ([email protected])

[CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

https://commons.wikimedia.org/wiki/File:Hypothymis_azurea_-_Kaeng_Krachan.jpg



"Mandarin Pair" by © Francis C. Franklin / CC-BY-SA-3.0.

Licensed under CC BY-SA 3.0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Mandarin_Pair.jpg



"Handsome" by Andy Morffew - https://www.flickr.com/photos/andymorffew/19377769093/in/album-72157630893775092/

[CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)]



Includes Dejavu Fonts 2.37 (https://dejavu-fonts.github.io/)



Some icons from Icojam (http://www.icojam.com)