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Technique for Maintaining Data Integrity Across Functionally Different Buses

IP.com Disclosure Number: IPCOM000035375D
Original Publication Date: 1989-Jul-01
Included in the Prior Art Database: 2005-Jan-28

Publishing Venue

IBM

Related People

Authors:
Clayton, ST Judkovics, M Loughner, KD Romesberg, CE [+details]

Abstract

Whenever there is limited input/output signals available, data integrity can be maintained, according to the present technique, by utilizing a single parity bit. By encoding command signals uniquely, a single parity bit can be made to achieve the following characteristics: 1) The command bus and the output data bus are parity checked as one entity. 2) On WRITE commands, the parity bit indicates also the parity for the output data.