A data processing system includes a number of input/output devices coupled to a communication multiplexer which polls the devices in a predetermined order. Apparatus in the communication controller rearranges the polling order to provide highest priority to an input/output device in a receive mode that...http://www.google.fr/patents/US4385382?utm_source=gb-gplus-shareBrevet US4385382 - Communication multiplexer having a variable priority scheme using a read only memory
Communication multiplexer having a variable priority scheme using a read ...