NanoShell 3rd Edition is a preemptively multi-tasked 32-bit operating system with a windowed GUI

Overview

NanoShell

NanoShell 3rd Edition is a preemptively multi-tasked 32-bit operating system with a windowed GUI.

Be advised that this is UNFINISHED/beta-ware software and you should not expect any stability from this software.

Copyright (C) 2022 iProgramInCpp

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 3 of the License only.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see the GNU licenses.

This software is licensed under the GNU General Public License V3 only.

Be warned that building this is not for the average Linux user nor is it for the faint of heart. Soon I'll work on a way to compile this in an easier way.

Goals

Note that user mode is "mysteriously" absent. This OS is entirely running in ring-0. I'm not particularly concerned with safety, any app is free to do anything. The design is NOT the best, by ANY means, so do not inspire yours from this design.

Feel free to submit issues you may have with this OS in the Issues tab. To discuss other things, join the Discord server.

  • Hello World

Primordial tasks

  • Paging and dynamic memory allocation
  • Loading an ELF at some virtual address with its own heap and executing it
  • Task Switching (concurrent threads)

User

  • A basic shell, can execute applications
  • Get a GUI running (Also in a task)
  • Applications can use the GUI API
  • Port DOOM
  • (ultimate boss) Port Mesa and Super Mario 64 (based on the DOS port, please)

Drivers

  • PS/2 Mouse and Keyboard
  • EGA Text mode
  • VBE Graphics mode (fast)
  • Bochs/QEMU debugcon (E9 hack)
  • Serial port
  • PCI
  • VirtualBox/QEMU/Bochs graphics device (not VBE)
  • VMware SVGA device
  • Sound devices (e.g. SoundBlaster 16)
  • USB

Permanent memory

  • Block storage abstraction base
  • Optional RAM disk images can be loaded and used as block devices
  • ATA device driver
  • USB stick device driver

File system

  • Root contains several files which are packed neatly into the executable
  • Mounting other file systems to the main one
  • Cleaning up after a while of not having used a certain directory page (can't apply to root or ram disks, you know why)

Build instructions

Linux build:

Not supported. Could be supported soon, but currently not supported.

Windows build:

Preparation

Create the build folder. Inside it create the folders asm, kapp, fs, nooptimiz and icons.

Create the tools directory. Download the i686-elf GCC+binutils, and extract it into tools/i686-gcc/. Also download NASM and place it inside tools/nasm so that it is reachable at tools/nasm/nasm.exe.

Make sure that make is easily accessible by opening a command prompt anywhere and typing make.

Compile tools_src/fsmaker and tools_src/icontest.

Place fsmaker.exe inside tools/. Place icontest.exe inside tools/icc/. (create the directory, if necessary)

The Moment of Truth

Run buildall.bat. It should start building. Once it's done you should have a kernel.bin in the repo root.

Installation

If you don't have grub2, install it. It's relatively easy.

Once you have a grub installed on your favorite USB drive, create a grub.cfg inside the grub directory. Add the following lines:

menuentry "NanoShell" {
	multiboot /boot/kernel.bin
	set gfxpayload=1024x768x32
	boot
}

Note that you can place your kernel image anywhere, but I prefer /boot/kernel.bin. Place your kernel image so that grub can find it, and then restart.

And you're done! You should be in NanoShell now. Type w to go to the GUI mode.

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Comments
  • macOS build/run support

    macOS build/run support

    Since the build system already uses clang, compiling it on my M1 MacBook Air was relatively easy. These are the changes I had to make for a successful build.

    After these changes, building was done with: LD=ld.lld arch -x86_64 make

    However, it triple faults on boot.

    opened by atipls 6
  • Use own Images / Icons

    Use own Images / Icons

    i was wondering how i can change the icons / images, when i look in the include/icons folder and select a file it says converted something how do i do that?

    opened by SpookyTabz 2
  • Add EXT2 support, make FS more reliable.

    Add EXT2 support, make FS more reliable.

    This PR (which I'll also merge) heavily changes the file system code. Note that this removes any FAT32 support that NanoShell had. Don't worry -- I'll add it back.

    opened by iProgramMC 0
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iProgramInCpp
iProgramInCpp
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