JH-DOS

My stupid, probably useless passion project to build a simplistic MS-DOS / CP/M inspired operating system.

I'll post progress as it happens, current target is probably an x64, or x86 (if I go 32-bit) machine, run in QEMU SerenityOS-style.

To start, most of the project will be based off this: https://www.cs.bham.ac.uk/~exr/lectures/opsys/10_11/lectures/os-dev.pdf

And this: https://os.phil-opp.com/

But I plan to get a foundation in x86-64 assembly by doing basic programs in 8086 assembly.

Things I want to achieve...

• A small, simple but useful OS similar to MS-DOS.

• A basic Multiboot compatible bootloader

• VGA Text Mode graphics

• Paged Memory Manager

• Cooperative Multitasking

• QEMU driver support

• Basic Networking Stack

Long-term goals (if this thing lasts)

Most of these will be ports or forks of existing software unless I get really cocky

• A basic text editor

• An assembler (probably a VASM port!)

• A small, basic C compiler (see: https://www.simple-cc.org/ or https://bellard.org/tcc/)

• A basic, fast, small window manager (see: https://wiki.xxiivv.com/site/rio.html)

• A BBC BASIC port (see: http://brandy.matrixnetwork.co.uk/ )

• VirtualBox and VMWare driver support

• A Raspberry Pi ARM port