A 32-bit x86 operating system designed for NASA mission monitoring.

• Boot Origin: 0x7c00
• Kernel Entry: 0x1000
• Stack (32-bit): 0x90000
• Video Buffer: 0xb8000 (VGA Text Mode)
• I/O Ports: Keyboard (0x60), CMOS (0x70/0x71), PIC (0x20/0x21)

To test ApolOS, ensure QEMU and apolos.bin are installed. Execute the following command in your terminal (debian command):

sudo apt install -y qemu-system-x86 &∓& qemu-system-i386 -drive format=raw,file=apolos.bin

The ApolOS shell provides a set of low-level commands for system management and NASA mission database interaction.

• help Displays a list of all available commands and basic usage instructions..

• clear Clears the VGA text buffer (at 0xb8000) and resets the cursor position to the top-left corner.

• info Outputs the current operating system version string: ApolOS v0.1.

• whoami Displays the current user privilege level, which defaults to root.

• echo [text] Prints the user-provided text string directly to the terminal..

• color [hex_code] Changes the global text and background colors by updating the currentColor variable.

  • Format: 0xBG (B = Background, G = Foreground).
  • Example: color 0x0A sets green text on a black background.

• nasa list Lists all NASA missions currently stored in the internal kernel database, including their names and current operational status..

• nasa info [mission_name] Retrieves detailed technical data for a specific mission..

  • Data points: Launch date, mission objective, operational status, and a brief technical description.
  • Database Coverage: Includes missions such as Apollo 11, Voyager 1, New Horizons, and the Artemis program.

• Real-Time Clock (RTC) A background routine continuously reads time data from CMOS registers ((0x00, 0x02, 0x04) to update the status bar clock on the bottom row of the display.

• Keyboard Input The system uses an Interrupt Descriptor Table (IDT) to catch hardware interrupts from port 0x60, mapping scancodes to a QWERTY character set for real-time typing.

Contributions to ApolOS are welcome! Please fork the repository and submit a pull request with your improvements or bug fixes.

ApolOS is licensed under the MIT License. See LICENSE for more details.