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Pharos is a free open-source RTOS for secure, safe and real-time systems with the following characteristics:
- Memory and enhanced time partitioning (TSP)
- Native support for sporadic, periodic and aperiodic threads
- Fixed-priority preemptive scheduler
- Execution time protection (threads are prevented from executing for more time than they are configured to)
- Small size (full image has ~100 to 300KiB text, ~30KiB data)
- Hard real-time determinism
- Fast critical sections
-...
Nuttx is a real time embedded operating system (RTOS). Its goals are: (1) small footprint usable in deeply embedded, resource constrained environments, (2) fully scalable from tiny (8-bit) to moderate (32-bit), (3) standards compliance, (4) real time, and (5) totally open. Think "Tiny Linux".
NuttX is now and Apache project in incubation. See https://nuttx.apache.org/download/ for the latest downloads.
Perix is a 16/32/64-Bit protected mode kernel, bootable and capable of running with or without an operating system. It is written in Turbo Pascal 7.0 for DOS, Delphi 7.0, Pascal Pro, Virtual Pascal v2.1, Delphi XE2 64-Bit, TASM, TASM32 and JWASM.
The latest version, 0.01I, supports multi-processor.
Added Open Watcom C++ and Borland C++ examples.
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An open source OS. It is 32-Bit and when possible 64 and 128-Bit. We are working on a complete rewrite. After which we will work on our UI.
ATTENTION!: After AquariusOS 0.0.4 AquariusOS will be based off of aqua-next. 0.0.5 with an aqua-next base will hopefully be released BEFORE 2016.
Mayax is a 32-bit hobby OS with windows style GUI.
Mayax is a 32-bit hobby operation system with windows style GUI. Actually, it support 2 modes: text mode & GUI.
- What it looks like?
A: Check out mayax-gui.mov and Mayax-text mode.mov from Downloads/videos.
- Do you have a demo?
A: Yes.
1. Download Bochs.zip or Qemu.zip from Downloads/demo
2. Unzip
3. Run bochs.exe(recommand) or qemu.bat.
- How to enter GUI?
A: startx [enter]
- Known issues?
A: A little unstable because of memory management. If it happens, just...
Mattise is a simple hobby operating system designed to run fast on 32-bit PCs. A newlib port will be released soon for developers to write their own programs for Mattise.
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Protical5 - A 32-bit hobby OS for the x86 processor. Coded in assembly and C, this project aims for no compliance with any OS standards or special performance. A project based solely on the ideas of having fun and learning.
This project focus on creating an original alternative 32-bit operating system for Intel 80386 compatible processors made in NASM (The Netwide Assembler). The main goal is to be, a simple and pratical plataform for developpment and plug in extra codes.
Blueport is an italian Open Source 32-bit operating system ... This project has temporarly moved to Gna.org: <a href="http://gna.org/projects/blueport">Blueport project</a>
512DevOS is a GPLed operating system that runs on 16 and 32 bit x86 compatible computers. The kernel and shell fit in 512 bytes and occupy only the first sector of a floppy disk.
AVOS is an advanced Real-Time 32-bit operating system that will work in any 80386 & above architecture pc's. AVOS employs a message passing scheme. The project has two main parts - The booting phase and kernel development. It is written in C and 8086 ASM.
nucleOS will be an 32-bit Operating System (perhaps we'll make it 64-bit later), written in Pascal and Assembler. It will be based on the i386 architecture and will support multi-tasking later on. Project is dead since 2006-03-19.
SD is a new operating system developed in the Pascal language (FreePascal, FPC/FPK) and NASM for IA-32. It's main purpose is to provide a fast and simple 32-bit multitasking OS. The OS must have several DOS, Windows and Linux features and maybe Win32 emu.
Horizon is a research project aimed at developing a 32-bit Operating System for the Intel architecture. It's written in C and assembler (GAS syntax) and one of its main characteristics is full network integration.
A simple operating system made for educational purposes. It will be a 32 bit multitasking open source operating system. Latest release covers interrupt handling, device drivers and shell service.
WISDOM is a 32-bit operating system with a primitive shell implemented. It is copyrighted under GNU/GPL license. WISDOM is also a research into the field of design of operating system. Operating System Development has been in the shadow in recent times.
Rumbler is a free 32-bit open-source Server operating system written entirely in ASM. We hope to have support for most networking hardware. Please join the project!
This project aim to make a free operating system (OS) as fast and small as possible. To achieve this goal we use 32 bit assembly and single address space (SAS).