EPOS — a lightweight 32-bit operating system built from scratch.

Languages & Technology

• C
• x86 Assembly (NASM)
• Custom bare-metal linker script
• QEMU for emulation

Acomplishments:

• Custom bootloader written in x86 Assembly
• GDT setup and switch to 32-bit protected mode
• Flat binary kernel linked with bootloader into a single .bin image
• Direct VGA text-mode output via segment 0xB8000
• ASCII art logo rendered at boot
• Multisegment memory model (BSS, .rodata, .data)

Build & Run

./run.sh

Boot Screen