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Interprocessor Command System Supporting Complex Commands

IP.com Disclosure Number: IPCOM000059633D
Original Publication Date: 1986-Jan-01
Included in the Prior Art Database: 2005-Mar-08

Publishing Venue

IBM

Related People

Authors:
Cavill, BR Malkemes, CD Wilson, F [+details]

Abstract

A technique is described whereby command information used in communication between a controlling microprocessor and a slave microprocessor is passed in a byte-wide parallel configuration using the same algorithm for simple and complex commands. Communication between a controlling and a slave microprocessor typically is performed in one of three ways. For simple operations, a single byte is passed between microprocessors and decoded similarly to a hardware logic decoder controlling an operation. For complex operations, communications are performed by sending commands which consist of a fixed number of multiple bytes in which each byte or frame contains a fixed set of information. However, this method requires extensive processor overhead in order to communicate simple functions.