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Show HN: A DOS-like hobby OS written in Rust and x86 assembly

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Show HN: A DOS-like hobby OS written in Rust and x86 assembly

#1

Post by krustowski »

To try it out, simply build the project yourself from source, or use attached bootable ISO image of the system (in Releases on Github) and run it in QEMU.

https://blog.vxn.dev/rou2exos-rusted-edition

Show HN: A DOS-like hobby OS written in Rust and x86 assembly
github.com

Re: Show HN: A DOS-like hobby OS written in Rust and x86 assembly

#3

Post by pvg »

rollcat wrote: post #2

Memory-safe language. x86_64, with Arm on the roadmap. Networking stack. Boots from a CD and via multiboot. Your hobby project wipes the floor with DOS.

Whoa there. Gotta run Doom and BASIC to compete with DOS. That is the officially recognized DOS-Kármán line.

Re: Show HN: A DOS-like hobby OS written in Rust and x86 assembly

#5

Post by krustowski »

DrNosferatu wrote: post #4

DOS-like but not DOS-compatible, correct?

You are right. The first iteration however is 16bit and is very close to MS-DOS in terms of compatibility. Moreover, any OS that can handle simple disk I/O ops could be considered a DOS system too, innit?

Re: Show HN: A DOS-like hobby OS written in Rust and x86 assembly

#6

Post by krustowski »

pvg wrote: post #3
rollcat wrote: post #2

Memory-safe language. x86_64, with Arm on the roadmap. Networking stack. Boots from a CD and via multiboot. Your hobby project wipes the floor with DOS.

Whoa there. Gotta run Doom and BASIC to compete with DOS. That is the officially recognized DOS-Kármán line.

What a challenge! Need to implement some interrupts it seems then, to provide an API for filesystem and so... Thank you for such idea

Re: Show HN: A DOS-like hobby OS written in Rust and x86 assembly

#7

Post by leeter »

krustowski wrote: post #5
DrNosferatu wrote: post #4

DOS-like but not DOS-compatible, correct?

You are right. The first iteration however is 16bit and is very close to MS-DOS in terms of compatibility. Moreover, any OS that can handle simple disk I/O ops could be considered a DOS system too, innit?

Correct, there is a difference between MS-DOS and IBM-PC compatible and a DOS (ex: all the DOSes that existed for Amiga/Apple II/Commodore etc). There are many DOSes (and even MSDOSes, because yay early PC era incompatibilities!), but there is a very dubious list of things needed to be MS-DOS and IBM-PC compatible. You can probably do it if you're willing to setup a hypervisor and emulate some hardware.

NGL one of my long term projects was/is something exactly like this but UEFI and secure boot. The idea being to use the VM extensions to create IBM-PC and DOS compatible environments. For anything using DPMI[1] I'd probably do the same trick as Win95 did and just replace it with my own implementation so it's not too overburdened with layers.

[1] https://en.wikipedia.org/wiki/DOS_Protected_Mode_Interface

Re: Show HN: A DOS-like hobby OS written in Rust and x86 assembly

#10

Post by rollcat »

pvg wrote: post #3
rollcat wrote: post #2

Memory-safe language. x86_64, with Arm on the roadmap. Networking stack. Boots from a CD and via multiboot. Your hobby project wipes the floor with DOS.

Whoa there. Gotta run Doom and BASIC to compete with DOS. That is the officially recognized DOS-Kármán line.

DOOM required DOS 5.0. rou2exOS is only the second take. Watch this area ;)
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