ti84-forth

As someone who has just got out of the curriculum that enforces usage of the TI calculators, given the ubiquity of these devices, I wish it was used more in teaching students about low-level programming, hardware, etc. especially with older models such as the TI-84+ there's great hacking potential. Compared to programming on the modern software stack, the Z80 is minimal. Plus, who said it has to be in assembly? Forth would do! Some of my own hacking attempts: [1] https://github.com/siraben/zkeme80/ [2] https://github.com/siraben/ti84-forth/

With Forth there are a handful of core words you really need to get things going, some ubiquitous but not mandatory convenience ones, and then it's up to what best fits the platform. There is no such thing as "the" Forth. Isn't Lisp just the same? The TI-84+ series is such a specific technological niche that it makes sense to write a Forth customized for it platform, which the author of this OS did earlier[0]. This repo is an OS though, so "Forth-based" means the OS is built on a Forth platform but with enough extra features that it is more than just a Forth language at this point. Also, arguably, the part where it is compiled through Scheme might make the purists say it's not a true Forth (which tend to be self-hosting). [0] https://github.com/siraben/ti84-forth

https://github.com/siraben/zkeme80 As a successor to my previous project[1], a Forth interpreter that runs under the TI operating system, I decided to go all the way and write my own assembler and OS. This is a project I've been working on for just over a month, but there's still a long way to go. The idea is to have a kernel + the Forth interpreter and compiler, then users can modify how their operating system works through the Forth files. My Forth implementation is mostly ANS-standard conforming, so most code should work right out of the box without any problem. See the GitHub repository for more, along with building instructions (you only need Guile and make build!) [1] http://github.com/siraben/ti84-forth