COMPUTER BUS DATA TRANSFER REDUCTION WITH PARITY CIRCUIT

摘要

A method and apparatus for transferring data from a first device (31) to a second device (33) connected by a controller (60) having a parity buffer (64) and a memory (22) having a first storage and a second storage is disclosed. The method includes the steps of transferring first data from the first device to the first storage; transferring second data from the first device to the second storage; transferring the first data to the second device and storing the first data in the parity buffer; and determining parity data from the second data and the first data stored in the parity buffer.