So I felt like practicing my C/C++ skills, and I thought, why not writing a programming language? So that's what I did. This one will be heavily based on the TI-BASIC and Axe syntax, but instead of emulating a 96x64 monochrome screen, it'll just output stuff to stdout like nearly every scripting language out there, like Python and Lua. That is, I don't intend fully emulating the TI-83+, but rather adapt it to the Linux operating system.

Right now, it's barely working, not much is implemented outside of numbers, strings, A-Z, Str0-9, Ans, ->, Disp, Input and the fact : behaves like \n.

You can download and compile it here: https://github.com/juju2143/tibasic

It should work for Linux and Mac OS X. For you Windows guys, you can try Cygwin.

And if you like, I'll just throw a bonus in, that is, 2 languages for the price of one!

What kind of changes did you have to make?

There is a graphic library planned (probably kinda like Axe CSE if there was one). It will probably use SDL and use a command to invoke a window.

It'll kinda be the same concept as on the calc with the home screen and the graph screen, the home screen uses command line and if you switch to the graph screen it'll open a graphic window. But, unlike the calc, the window isn't always available.

And of course it will support double buffering.

Yay, are you also planning on doing stuff like buttons, scrollboxes, input boxes etc?

Probably not. You might have to do it yourself with mouse/keyboard input. (getKey/getMouse?)

What bothered me in TI-Basic was the limited number of variables. Any plans to increase the limit? (Maybe all numerical variables start with a capital letter, and can be followed by lowercase letters?)

Welp, you're right. I'll check it out.

EDIT: Fixed. Accidental stray character caused it to not compile.

That is nothing. Try the HP Prime whitespace bug. I forgot what caused it, but since HP Prime program code is stored in unicode format (UTF-16 I think?), there is more than one character that looks like a space, and copy/pasting code from forums to the connectivity kit or the emulator sometimes cause that code to not compile (Syntax error), even if the code is fine. Often, it's due to wrong whitespaces getting inserted into the code (usually at the end) and a bug in the HP Prime emulator causes error when compiling programs with those spaces. It can be very hard to solve, since they're hard to notice >.<

I am really curious if some classic BASIC games will run fine even with no modifications? I remember once I made an Axe program that almost ran identically with no change (except inverted X coordinates).