I'd have to agree with QAVION on this one. My notes state that FMC's can receive CAS,TAS,BARO ALT and PRESS ALT from both ADC's. The FMC will normally select the first valid ADC on line.
With reference to baro select, correct me if I'm wrong but all baro settings are referenced to captains altimeter unless selcted to F'O's via L/R baro selct switch on P55 panel.
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