Thanks Mustapha, had a longer look, and realised I may have been drawing a long bow to assume the pumps 2 + 3 are DC powered. Closest hard info I could get was that the "old" config, where all are ADP, has DC elect. control.
Either way, it would seem DC or AC powered, that the elec pumps on 2 and 3 would not be powered in emerg. elec config. (pls excuse airbus expression). So now it seems that the hyd power will only come from pumps 1 and 4 via windmilling step aside core gear box, providing redundant power to the flt ctls, and flaps if you are having a really bad day
