nStudio

About

nStudio is a lightweight, fully-featured ARM assembly Integrated Development Environment (IDE) built specifically for the TI-Nspire CX and CX II calculators running Ndless. It allows developers to write, edit, and navigate ARM assembly code directly on the calculator itself, providing desktop-like text editing capabilities on a portable device.

Features

• Gap-Buffer Text Editor: Highly efficient text insertion and deletion, capable of handling large files without lag.
• Syntax Highlighting: Real-time parsing and highlighting for ARM mnemonics, registers, immediates, labels, comments, directives, and string literals.
• Built-in File Browser: Navigate the Ndless filesystem, open existing files, and save projects with a clean, themed directory interface.
• Instruction Catalog: Integrated offline reference manual for ARM instructions, including argument signatures, descriptions, and CPSR flag effects.
• Navigation Tools: Instantly jump to specific lines or browse an auto-generated list of all defined labels in your code.
• Theme Engine: Switch between Dark and Light presets, or build a fully custom color scheme directly from the settings menu.
• Character Map: Easily insert special symbols and operators that are not readily available on the physical keypad.

Controls & Shortcuts

Editor

• Arrows: Move cursor
• Ctrl + Left/Right: Jump by word
• Ctrl + Up/Down: Page up / Page down
• Ctrl + Shift + Up/Down: Jump to top / bottom of file
• Ctrl + S: Save
• Ctrl + Shift + S: Save As
• Ctrl + O: Open File
• Ctrl + G: Go to Line
• Ctrl + L: Open Label Browser
• Ctrl + M: Open Menu Bar
• Ctrl + Catalog (Book Key): Open Special Character Map

File Browser

• Arrows: Navigate files and folders
• Enter: Enter folder / Open file
• Tab: Toggle file filter (show all files vs .asm.tns files) / Confirm save destination in "Save As" mode
• Esc: Cancel / Close

Catalog / Cheatsheet

• Arrows: Navigate categories and instructions
• Enter: Insert the selected mnemonic into the editor
• Shift + Enter: Show detailed information about the selected instruction

Building from Source

To build nStudio from source, you will need the Ndless SDK installed and properly configured on your system.

1. Clone the repository.
2. Ensure the Ndless toolchain binaries (nspire-gcc, nspire-ld, genzehn, make-prg) are in your PATH.
3. Run the following command in the project directory:

make

This will produce the nstudio.tns executable.

Installation

1. Transfer the nstudio.tns file to your TI-Nspire using the TI-Nspire Student Software, N-Link, or TiLP.
2. Ensure Ndless is installed and active on your calculator.
3. Open nstudio.tns from the calculator's native file browser to launch the application. Settings are automatically saved to /documents/ndless/nstudio.cfg.

License

This project is licensed under the GNU General Public License v3.0 (GPLv3).