jombloforth VS ti84-forth

Here's one of the many forks that brings it up to 64-bit:

https://github.com/matematikaadit/jombloforth

If you like forth there's an awesome series of comments here on hacker news on building a simple variant in a few simple steps:

https://news.ycombinator.com/item?id=13082825

I took that, and built a simple forth-like system, in golang following the original recipe and breaking it down into simple steps for learning-purposes:

https://github.com/skx/foth

Forth also requires very minimal resources to implement which can be fun in constrained environments. Here it is on a TI-84+ calculator[0] or even a computer in The Powder Toy.[1]

The runtime design is a little quirky but straightforward and you can extend the system as you execute (or even change interpreter semantics), or add optimizations such as some form of JIT quite easily.

[0] https://github.com/siraben/ti84-forth

[1] https://github.com/siraben/r216-forth

Some time ago I wrote an implementation of Forth that runs on the TI-84+ and TI-83+ calculators directly inspired by Jonesforth.[0] It runs under TI-OS as well, but the amount of available space is somewhat limited. On another implementation I wrote[1] you have full access to the calculator hardware and memory from Forth.

[0] https://github.com/siraben/ti84-forth

[1] https://github.com/siraben/zkeme80

On the TI-84+, assembly programs still work and it's still a test-approved device. I wrote a Forth interpreter[0] that can interop with the syscalls as well

[0] https://github.com/siraben/ti84-forth