TetrOS: bare-metal tetris

Features

• Compiles to a standalone disk image
• Written from scratch using only Nasm and Rust
• Custom BIOS bootloader
• 32-bit x86 OS
• Detailed comments. Read the makefile, then start in ./bios/main.asm.

Non-Features

• Never tested on real hardware
• Minimal gameplay and graphics. These features aren't hard to implement, but also don't present any interesting challenges. I have other things to do.

🚀 Building and Running

• All scripts are in the makefile.
• To build and run, use make qemu.
  • Dependencies: nasm, cargo, GNU binutils, qemu
  • This will NOT work on MacOS. BSD ld does not work like GNU ld.
• Alternatively, a compiled disk image for the latest commit is here. This is the same file produced by make.
  • Download it and run qemu-system-i386 -d cpu_reset -no-reboot -smp 1 -m 2048 -machine q35 -net none -serial stdio -fda "disk.img"

📜 Resources

Used directly:

• jdh's video
• The OSDev wiki
• RedoxOS bootloader

Useful background knowledge:

• Writing an OS in Rust
• Operating Systems: From 0 to 1