I’ll echo what everyone else said - SUPER IMPRESSIVE and awe-inspiring work. Thanks for sharing it with the world.

I have one question: While I can read and understand each individual line of code you wrote (go Crystal!) and what each method does, etc., I’m at a total loss for how you knew what and how to build - big picture wise. Can you share a bit about your process for building the mental model of this? How do you know where to start, what modules to build, what’s needed / what’s already there, etc? What roadmap (if any) are you using?

I’m just amazed at how something like this comes together and would love to learn a bit more about the process a single dev uses to build it.

Thanks in advance!

You can checkout what I replied to jchw. But tldr, wanted to do DOS => got ambitious => made it multitasking => got more ambitious => added graphics and guis.

Currently it's pretty barren driver-wise, I currently have a FAT16 driver, a keyboard/mouse driver, some basic code to handle core architecture hardware and that's it. I really want to have CDROM support, a network driver (ne2k or e1000), an audio driver (sound blaster?) and an actual file system.

My roadmap is go with the flow. If I want a text editor, I'll focus on building a text editor. If I want to play doom I'll port doom (but I dont so I won't :^)

How/when did you get started with coding? How did you learn your skills and how do you stay so productive?

I second this, please, oh lord, tell us!

I just wanted to say, to build such a fully-featured OS on your own, and in such a short time frame, is an incredible achievement!

I very much look forward to reading through the code and learning more about it.

Thanks but the code isn't that clean, there are hacks here and there and it isn't organized as clearly as I wanted to but feel free to look through it.

> the code isn't that clean

It's cleaner than a solid 90% of the code I've read over the years :)

I guess Crystal itself deserve some credit as well :)

Hah, come on, to me you seem like a humble Linus Torvalds!

- What are the things that you have patched in crystal and libc?

- Any plan to release ISO for us to quickly run it in our local system?

Precise GC information, the crystal compiler prepends a dword/qword value indicating an class' typeid upon allocation. I decided to patch the compiler to generate 2 functions, one that outputs the class' size based on a typeid, another one that outputs the offsets of each pointer in that class as a bitmap, based on a typeid.

The compiler also generates a null-terminated array of pointers pointing to the offsets of global variables.

No iso images yet, I haven't implemented iso9660 filesystem support, but it's coming soon?

1. Would you consider this project "mature", or still rapidly evolving? Any particular aspects you are actively working on?

2. Any other project ideas you are toying around with?

Kudos and cheers!

Favorite anime?

How old are you?

shhh.

From digging trough his blog, looks like 16-19