I had few free days, so i've decided to try to write an OS (well, i'm not sure if i should call it operating system since it still doesn't do anything really useful) and this is what i came up with after 3 days.

Decided to call it FZ/OS (Filip Zajac is my name, OS is obvious, and "/" is the fun part). It's written in ASM (used NASM to compile the code). Boots from a floppy (bootloader: search google for BOOT12.ASM) or a CD (if you insert the floppy's IMA as a boot file), supports FAT12 file system (thanks to bootloader...), displays some text, interacts with user (in other words: keyboard works), has graphics mode (320x200x256).

The newest build (not uploaded to the website yet): http://www.mediafire.com/?bfm3e31r48szymz
Facebook fanpage (just to see how many of ya really "like it"): http://www.facebook.com/pages/FZOS-Fili ... 3962583673
Website (screenshots, informations, download): http://fzos.iamstupid.eu/

Tested and confirmed working in:
VM: Virtual PC 2007
VM: VMWare Workstation 7
VM: Virtual Box

Please test and enjoy

Downloading!

I will try it ASAP!

Done testing

Make sure you tried out the dev menu under ESC key

EDIT: yes, i know no commands work yet, but it's been just 3 days of development.

Obligatory "let's try it on my 486" screenshots:




fzajac, do you know if the bootloader or kernel uses any standard or protected mode CPU instructions?

Nice shots, linuxlove. Always good to know it runs well on another old real machine


It's all real mode with a lot of things depending on BIOS. Didn't make my way to protected mode yet.

Well, if you can provide a 720K disk image, I might just try FZ/OS out on something even older than the 486. I know the graphics test won't work since this machine doesn't have VGA in it.

That would be nice
Here you go: http://www.mediafire.com/?jcsgll084f28zce

Yep, it works fine on The Little Beige Box's namesake. Like I said, the graphics test won't work since I don't have a VGA card in this machine.

Well, works fine under virtual box for me. Perfect graphical test, but are there any commands? help, HELP, ?, -help, --help, /HELP all do nada.

I burned you OS to a disk and booted beautifully from my Core i5 build, so no compatibility issues in sight!

This is awesome. I recently read The Elements of Computing Systems, and this is sort of the end result. Mind sharing the source by any chance? (pretty please? )

Downloading..Please can you use http://www.fyels.com for files under 2GB. I hate wait-in-the-line file sharing services.

Edit: Looks cool, waiting for your next release that actually replies to INPUTs .

I downloaded and it's pretty cool!! Keep up the work because I really want to see progress on it

When is the beta?

Thank you all for your positive feedback, i will try to continue my work on this project, and share new builds with you.


As i've said - not yet implemented. Wait until next public build. Maybe today, maybe tomorrow.


Didn't really plan sharing the source, there's not much to share to be honest... So if you really want i can send it to you but you'd better check out this tutorial. It will probably learn you more than just looking into the source


It would be silly to set any dates now. What you've seen is the result of 3 days of hard work (well, at least the first two, after which i had the graphics mode working). Today i will most probably don't have time for much new. It's far far far away from beta. It's barely working!

Ok,its near to dos but without commands.

you are so cool,
But I don't know what software you use to write that OS,c++?could you tell me?

It's assembly language. Just pure ASM. I used usual text editor (like notepad.exe) to type in the code, then i've compiled it with NASM (The Netwide Assembler).

Good news: i've finally managed to make use of input, added some basic commands, more will come soon. Here's a screen shot:

(click the image for a good view... you know - the uploader likes to mess with PNGs sometimes)

Bad news: this brings a lot of new bugs... so no public build today. I hope tomorrow i will be able to release something umm... bigger.

Just a couple of suggestions.

• When the kernel loads, have it clear the screen before displaying any messages
• It might be good to remove the "Press any key to continue" prompt and just drop you straight into INPUT.

I was dreading clicking this topic given how many "I made my own OS!" topics turn out to be "I edited some bitmaps and a version string" on here... but this? This is cool.
Booted the iso on my A150 netbook via EasyBCD ("run from memory" option) and it worked just fine. Oddly the graphics test displayed horizontally. Impressive work though to have done something from scratch.

Good ideas. Done


I'm glad you've enjoyed it.
What do you mean by "the graphics test displayed horizontally"? If it looks different than on linuxlove's photos, could take photo(s) of it and upload here?

Strangely although I did take a picture or two it doesn't seem to have saved on my 3DS. The bars ran horizontally across the screen rather than vertically as they are in the shots above though. I'll try and get around to adding one in a day or two.

I tested it on my netbook and runs pretty well !!

I hope to see more on this project

NEW BUILD AVAILABLE!

Download build 20110519-1409:
IMA: http://fyels.com/xLr00p
ISO: http://fyels.com/SLr00p

Tested on the 486 again.

BUGS:

• You seem to have broken backspace support in this build.

SUGGESTIONS:

• Do you really need 2-3 different commands to do the same thing? Might be better to have one command and let the user map the command to something they'd be familiar to use, like:
  
  Code:
  map "cls" "clear"