The HelenOS project is an effort to develop a complete and usable modern operating system, yet offering room for experimenting and research. HelenOS uses its own microkernel written from scratch and supports SMP, multitasking and multithreading on both 32-bit and 64-bit, little-endian and big-endian processor architectures, among which are AMD64/EM64T (x86-64), ARM, IA-32, IA-64 (Itanium), 32-bit MIPS, 32-bit PowerPC, SPARC V9 and Xen 3.0. Thanks to the relatively high number of supported architectures and suitable design, HelenOS is extremely-well portable.
HelenOS House cleaning. Since I took the time to write a README that outlined how future contributions to BDSH should be written .. it seemed prudent to ensure that I follow the same practice :) Its amazing how quickly many small messes can mount up to 6 hours of fixes. Glad its done, now on to more fun! tinkertim — 11 months ago
Updated 07 Jul 2009 23:42 UTC
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We are pleased to announce the immediate availability of HelenOS 0.4.0. This is the list of major improvements since the previous release:
bdsh shell (simple CLI)
task loader
task tracer
RAM disk support
FAT file system
Pavel Rimsky, a new core contributor, has recently added support for the newer UltraSPARC processors so that besides the already supported UltraSPARC I, II and IIi processors, HelenOS runs also on the newer SPARC V9 subarchitecture of UltraSPARC III
The FAT file system is now feature-wise on-par with the memory only TMPFS file system. Standard operations like open(), read(), write(), lseek(), close(), opendir(), readdir(), rewinddir(), closedir(), mkdir(), unlink(), rename(), getcwd() and chdir() are supported. Along with the new filesystem, a block cache layer was developed.
In a relatively short period of time, there have been multiple achievements on the HelenOS development front. In June, Martin Decky has reworked the userspace start up phase and allowed applications to be loaded from a file system (only TMPFS at that
In a relatively short period of time, there have been multiple achievements on the HelenOS development front. In June, Martin Decky has reworked the userspace start up phase and allowed applications to be loaded from a file system (only TMPFS at that
fat x86_64 i386 x86-64 filesystem tmpfs mips powerpc ipc programming alternative microkernel sparc64 ppc32 mips32 amd64 smp operating system operating_system_kernels kernel operating_system source multithreaded os symmetric_multi-processing ia32 ia64 ppc64 xen spartan arm native_api itanium sparc vfs x86 ppc mff_uk emerging_project i686
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AuroraUX, Debian GNU/Linux, FreeBSD, NetBSD, Syllable operating system family
Project Cost |
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|---|---|
| This calculator estimates how much it would cost to hire a team to write this project from scratch. More » | |
| Include | |
| Codebase | 804,516 |
| Effort (est.) | 225 Person Years |
| Avg. Salary | $ year |
| $ 12,365,284 | |
