Everyone builds To-Do apps. I built an OPERATING SYSTEM.
And not on a fancy PC. On my ANDROID PHONE.
Hey, I'm Karthik — Fatafat321 Developer
I build crazy stuff. This time, I built an OS.
Meet FatafatOS 81 v1.3
What is it?
- An OS that boots in JUST 999KB RAM
- Built entirely on Android using Termux + NASM Assembly
- Press F and it paints FULL TIRANGA FLAG
- Says "Made in India - Tiranga Edition" at bottom
No Linux code. No Windows code. 100% mine.
Why 999KB?
Because why not? I wanted to see how small an OS can be and still show Tiranga.
Spoiler: IT BOOTED. IN LIMBO x86 EMULATOR. WITH 999KB RAM.
What It Does
You boot it. Black screen. You press F.
BOOM.
- Top 60 rows: SAFFRON
- Middle 60 rows: WHITE
- Bottom 60 rows: GREEN
- Bottom bar: MADE IN INDIA in color
All painted by writing directly to VRAM at 0xA000. Pure Assembly madness.
The Crazy Part
I don't have a PC. I built this on phone:
- Code in Termux
- Assemble with NASM
- Boot in Limbo x86 Emulator
If I can build an OS on a phone, what's your excuse?
Files
- boot.asm — My 512-byte bootloader
- kernel.asm — Kernel that paints Tiranga
- fatafatos-999kb.img — Final 999KB image
Author
Karthik
Fatafat321 Developer
Building OS on phone. Made in India.
Final Words
This is Made in India. Built by an Indian. For India.
JAI HIND! JAI BHARAT!
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