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Concept
BeIA
Résumé
BeIA, or BeOS for Internet Appliances, was a minimized version of Be Inc.'s BeOS operating system for embedded systems.
The BeIA system presents a browser-based interface to the user. The browser was based on the Opera 4.0 code base, but most of times it featured built-in dashboard (like Sony eVilla), and was named Wagner. Unlike the BeOS, which runs the Tracker and Deskbar at boot-up, the BeIA OS boots straight into the Opera browser interface (only on Compaq IA-1, similar to the later Google ChromeOS does with the Google Chrome browser). While it is possible to boot BeIA into an interface similar to the standard BeOS, doing so involves special knowledge.
The BeIA operating system employs a number of techniques to minimise the system footprint. These involve a number of pre processes which yield an installable file system image.
The CFS Filesystem was used to reduce the file system size. CFS (Compressed File System) was a file system created in house at Be Inc that aimed to compress the files within itself to save space. The filesystem had a similar set of properties to the native BeOS file system BFS, but some of the more advanced features (live queries and attributes) were either broken or non-functional in many of the Beta releases of the software.
The BeOS uses ELF format executable files, much as many other operating systems. BeIA uses an extended version of ELF, the name of which is unknown but which has come to be known as CELF, from the CEL magic word within the executable header and the fact that it is derived from ELF format executables through a compression process. The CELF (Compressed ELF) files use a patented technique to compress the op codes within the executable and reduce the overall footprint of each executable file. The file was compressed by creating a set of dictionaries that contain the op codes and are read by the kernel at start up and mapped into the executable in memory at run time.
Source officielle
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