[feature request] U2+ memory dump

[Zibri]

It would be nice to have a memory dump feature made like this:

1. dump full memory from 0000 to FFFF
2. dump also all IO registers (where possible) and cpu status.

Sort of like a snapshot.

I know that action replay can do it, but without the use of other cartridges, it would be a nice feature to have.
Just a clean BIN file or two, saved on the pendrive.