Hello! I've been lurking on Cemetech for years and have made a couple TI-BASIC programs, but I've recently started learning C/C++ and have some project ideas that I am going to be exploring in the future.

Currently, I've been researching the AppVar file format. While there is a lot of information on how to work with them on the calculator, I haven't been able to find any resources on the file format itself.

A project I'm working on is going to involve converting binary files into 84 + CE AppVars so they can be read by a calculator program. Are there any resources that would help implement this programmatically?

Thank you! I apologize if this has been answered before.

You can find documentation on the container format that appvar files use here: http://merthsoft.com/linkguide/ti83+/fformat.html

There are a few existing tools for generating 8xv files, depending on what language you're using. For shell scripts, Mateo's convbin (which is included with the CE C toolchain) can convert binary files to 8xv and vice-versa. For C++, there's tivars_lib_cpp. For Python, you can use tivars_lib_py, although it hasn't officially been released yet.

Thank you! This is exactly what I was looking for! I'll probably use convbin for now, and maybe implement a custom converter for my project later if it could benefit from it.