The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 1977
Filed:
Jun. 07, 1976
William Clyde Cockerill, Austin, TX (US);
Louis Michael Hornung, Austin, TX (US);
Donavon William Johnson, Austin, TX (US);
Richard Alan Vrba, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Logic circuitry is provided for controlling the transfer of data between 1) a low cost pipelined processor and its associated memory, 2) between the processor and input/output devices, and 3) between the input/output devices and memory. A plurality of unidirectional busses are provided to interface the processor and memory and a bidirectional buss is provided to interface with the input/output devices. The logic circuitry provides a control function to steer data over the proper buss structures interconnecting the processor, the memory and the input/output devices and provides those interconnections in a manner which allows the processor to overlap input and output functions.