I’ve just begun a port of Linux to the TI-Nspire CX and I’m happy to say I have a minimal kernel booting successfully on the calculator!
Here’s the UART bootlog and you can see we actually make it to userland without crashing!
The minimal port has support for the interrupt controller and the timer. UART support is on its way (at the moment, it’s just using the early printk console) and I’m hoping to get the framebuffer working soon so I don’t have to rely on the dodgy serial adapter I made.
Edit: For updates and downloads, visit the Omnimaga thread here.