A bus controller (20) for a data processing system, in which data is transferred between a bus master (10) and a bus slave (30) of a plurality of different data port sizes, is able to obtain port size information from an address signal using an incorporated address area/port size correspondence table...http://www.google.de/patents/US5537659?utm_source=gb-gplus-sharePatent US5537659 - Bus controller for adjusting port size communication between a bus master and bus slave using bus master information
