A Nintendo 3DS homebrew application that embeds a full RISC-V CPU emulator (mini-rv32ima by cnlohr) to boot a real Linux environment inside the 3DS Horizon OS.

Features a custom ANSI/xterm terminal emulator on the top screen with full 16/256/24-bit colour support, zoom, and viewport panning, plus a custom bottom-screen touch keyboard. Comes with a prebuilt image including BusyBox tools, a JavaScript runtime, and some other goodies.

Controls

• L / Y: Zoom out
• R / X: Zoom in
• ZL: Toggle auto-follow cursor
• ZR: Toggle font (8x8 ↔ 5x7 compact)
• Circle Pad: Pan viewport
• D-Pad: Send arrow keys to Linux
• START: Quit and return to Homebrew Launcher

Keyboard

• SHF: Shift (uppercase)
• ?#1 / #+=: Symbol layers
• ABC: Return to alphabetic layer
• CTL: Ctrl modifier
• TAB / ESC / ENT / DEL: As labelled

Credits

• Built using libctru and minirv32-ima