Method of ensuring data consistency between an input/output channel and a processor

摘要

The method involves transferring a DMASYNC transaction to all input/output or I/O channels within the computer system if a DMA termination message is received. The transaction DMASYNC involves: instructing the I/O channel to force a coherence; responding only after the coherence has been ensured; and sending a message to indicate when the transaction is finished. An Independent claim is also included for an arrangement for ensuring data consistency between an input/output channel and a processor.