Hi!
If you are only interested in those IO ports, an logic analyzer is probably better and easier to use. Modern LA can be programmed to log/filter various IO scenario.
It's probably a bit expensive to buy an LA or ICE or any other specialised hardware just to get a board going. So I thought it might be possible to use Bochs to do the job instead. But maybe I'm mistaken.
Groetjes, Peter Busser