Just a quick update: My adapter is crap (poor connection and no connection at all on some pads) and my lab supply is puny so I can't power the device without battery. So I need to either find very small springs (that could be used to make good connections on a number of pads from a new adapter or some other nondestructive way of getting wires on the pads, or I need to get a more powerfull supply (working on it but it'll take a while)

OTOH: at http://hacklab.fi/ I have access to a 48ch (actually 96ch but we have only one bag of probes...) logic analyzer so once I figure out a good way to get the probes to the pads it's possible to look at all of them at the same time...