[Media] My Rust OS for microcontrollers now has a dir command

Let’s try again after I got auto moderated.

It’s a big milestone to be able to read from the SD card. This is the Neotron Pico which uses a Raspberry Pi RP2040 microcontroller as both the CPU and the VGA video controller.

The OS and the hardware abstract layer (which I call the BIOS) is all Rust.

More details: https://neotron-compute.github.com