Building a file system

The idea of profiles allows developing the system in a modular and flexible way. The main goal is to create a file system made up of modules. Depending on the services needed, different packages can be installed. In order to run the embedded voice recognition applications are needed the minimum profile for booting and basic execution support and the network profile to allow redirecting the user interface to another HOST and provide telnet access to the embedded PC.

$$\mbox{ \epsfxsize =70mm \epsffile{images/prof.eps}}$$

$\parbox{7cm}{{\bf FIGURE \arabic{figcounter}:}\quad {\it Combining profiles incrementally. } }$

In table 1 there are shown the required profiles according to the application needs.

$\parbox{7cm}{{\bf TABLE \arabic{tabcounter}:}\quad {\it Embedded system requirements. } }$

Processor	386 or up *
RAM	4 Mb or up
Boot device (one of the next)
Network card with bootp
temporal connection floppy disk
No volatile memory
(Serial port)
File system capacity
Minimal real time execution support	114 Kb
Modular real time execution support	(+) 600 Kb
Network	(+) 430 Kb
On site admin-utilities	(+) 600 Kb
On site debugging	(+) 3.3 Mb
Java 2 Micro-edition	(+) 2 Mb
Java standard	(+) 25 Mb