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[Savannah-register-public] [task #6577] Submission of Real Time Executiv

From: Toufik SARNI
Subject: [Savannah-register-public] [task #6577] Submission of Real Time Executive & Time-Sharing OS
Date: Thu, 01 Mar 2007 23:57:13 +0000
User-agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 2.0.50727)


                 Summary: Submission of Real Time Executive & Time-Sharing OS
                 Project: Savannah Administration
            Submitted by: rtexecutive
            Submitted on: Thursday 03/01/2007 at 23:57
         Should Start On: Thursday 03/01/2007 at 00:00
   Should be Finished on: Sunday 03/11/2007 at 00:00
                Category: Project Approval
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
        Percent Complete: 0%
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                  Effort: 0.00



A new project has been registered at Savannah 
This project account will remain inactive until a site admin approves or
discards the registration.

= Registration Administration =

While this item will be useful to track the registration process, *approving
or discarding the registration must be done using the specific Group
<> page*,
accessible only to site administrators, effectively *logged as site
administrators* (superuser):

* Group Administration

= Registration Details =

* Name: *Real Time Executive & Time-Sharing OS*
* System Name:  *bastos*
* Type: non-GNU software & documentation
* License: GNU General Public License V2 or later


==== Description: ====
We want in an educational purpose, to improve 
BastKernel(c) version 0.0.1 that can be compiled as a Hard Real Time
Executive / Time-Sharing kernel, based on intel(c) i586. 
Briefly, BastKernel is the concatenation of three parts:

1- Boot (Floppy is used)
2- 16-bit part (detect the CPU, Memory, disks, Load GDT, switch to protected
3- 32-bit part (load IDT, enable paging, memory handler, and processes
initialisation for the time-sharing mode).

At the moment, the hard real time part is featured by: 
One memory area for the kernel & application. 

Periodic tasks are scheduled in Rate Monotonic (RM).

The Server is used to schedule in FIFO the aperiodic tasks. 

The Priority Ceiling Protocol (PCP) is implemented to prevent the priority
inversion, and deadlock situations. 

API provided : create tasks, semaphores, and control the time (the time of
each routine, system clock,...) 
To do: Improve the kernel loader; write hard disk & floppy drivers; RS232 &
Ethernet drivers; File system; TCP/IP; mailbox; RPC; implement others
scheduling policies(EDF,...), and command shell. 

For the Time-Sharing part: 
Kernel and precesses are separated (hardware protection) 

The scheduler works in Round Robin using TSS to switch.

Binary table to menage the 4Go of memory paging. 

API provided: create processes with their stack. 

To do: Idem to real time part.

==== Other Software Required: ====
Borland Compilers, Microsoft MASM => Win32


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