| 1. | ShawnOS | | | Sure as Hell Ain't Windows Ninety five, the corner cutting OS due to the original schedule. Always intended more as a learning experience for author and others than as a practical, useful OS. Everything done as simply as possible. [Open Source, GPL]
www.overwhelmed.org |
| 2. | SunriseOS | | | Tiny operating system written in Assembly, via NASM, by ICT student. Meant for only fun and learning. [Open Source]
www.geocities.com |
| 3. | KOS | | | Kid Operating System. Modular (run-time dynamic linking), preemptive multitasking, to have SVR4-like VM. Begun 1998 by young programmers, most of them students. Goal: not obtaining OS, but learning OS internals and functioning of x86 processors. Downloads, links, documentation. [Open Source, GPL]
kos.enix.org |
| 4. | Amateur OS: AMOS | | | Scott Billingsley's OS: realtime for DSP and amateur radio, one user/application, 16-bit real mode, for i386+, FAT 12/16; no TSRs, library of routines to program into apps, minimal kernel support (minimize interrupts), written in NASM assembly and Sphnix C--.
scottie.20m.com |
| 5. | Topsy | | | Teachable Operating System: tiny multithreaded messaging microkernel, in ANSI C; protected threads, memory managed, and thread/process control. From undergraduate course on concurrency, device programming, OS concepts. Descriptions, documents, theses, downloads, contacts, links. [Open Source, GPL]
www.tik.ee.ethz.ch |
| 6. | NACHOS | | | Not Another Completely Heuristic Operating System: teaching OS coded in C++ subset, developed at UC Berkeley for OS and Systems Programming classes; now used worldwide. Descriptions, FAQ, port and bug lists, assignments, downloads. [Open Source]
www.cs.washington.edu |
| 7. | Nachos/486 | | | Port, extension of instructional OS, now stand-alone, protected mode, multithreaded, compiles in FreeBSD to run on i486+, can be relinked without recompile. Descriptions, report (HTML, PDF, PS), download. [Open Source]
www.cs.virginia.edu |
| 8. | FDOS | | | Essay and OS for learning, so people who want to know more of technicals in PCs can find interesting answers presented easily; FAT 12 file, directory support; 100% NASM, documents, website in English, German; (c) Stefan Tappertzhofen. [Open Source, GPL]
www.visual-opal.de |
| 9. | AcadOS | | | Academic Operating System, goals: to expose students to more modern ideas than older OSs, to basic OS mechanisms, to OS and language design and prototyping; old version, ideas for new microkernel version.
www.cs.uiowa.edu |
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