µPandOS

Description

µPandOS is a simple, yet complete, educational OS built on three astraction phases:

• Level 1 - Queue Manager and fundamental data structures, such as PCB and messages.
• Level 2 - Nucleus (kernel).
• Level 3 - Support for user processes and virtual memory handling.

Features

• Round-robin scheduler - 5ms time slice.
• Exception handling.
• System Service Interface to create and terminate processes.
• Interrupt handling.
• Support

Usage

1. First of all, make sure you have installed the emulator. For example, if you are using Ubuntu, this is done by launching:

   sudo apt install umps3

   Instructions for others distro can be found directly in µMPS3 repository.

2. Compile project files, to create the *.o object files, by launching:

   cd microPandOS
   make

3. If you need to delete such object files and previous configuration of the emulator, you should use:

   make clean

4. Specifically for tests described in Level 3, you can generate testers with:

   make maketest

5. Symmetrically, to delete testers obj file:

   make cleantest

There is also a config example of the simulation machine provided: (umps3.json), which is the one I used for the exam. You can find more information about the whole development process in relazione.pdf (in italian!).

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cheers, hys 🎴