An approachable platform for hacking Forth is the OLPC laptop[1]. For about $25 ...

brudgers · on July 9, 2015

GNU Forth [or gforth] is available on Android phones.

http://www.forth-ev.de/wiki/doku.php/en:projects:gforth-andr...

lukego · on July 9, 2015

If you have an OLPC XO 1 then you can also download the specifications for the AMD CPU here: http://www.versalogic.com/support/Downloads/PDF/LXManualMay0...

That tells you how to do graphics hacks and so on. I had fun with that on my OLPC. I optimized the Forth console to scroll using hardware BLIT (much faster than CPU copy of the framebuffer) and I ported Squeak Smalltalk to run directly on OFW using hardware graphics primitives e.g. for the mouse pointer.

Fun times :)

lukego · on July 9, 2015

The biggest hack I did was to rewrite the builtin PONG game to try and be more in the spirit of Thinking Forth: http://lukego.livejournal.com/10847.html