micro:bit v2

Oh, nice, the first one was old tech even at release day but this one is actually quite usable :-)

I'm just using the old SDK12 with a one-liner to allow the second GPIO port to be used. It means only 64k is used right now but that's more than enough for most stuff.

Interesting, so it runs including bluetooth? With S132 3.0? maybe the extra ram is only about linker script? or possibly enabling it in bootloader if it needs changing some registers