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:
Mar. 23, 1982
Filed:
Jan. 31, 1979
Jian-Kuo Shen, Watertown, MA (US);
John J Bradley, Framingham, MA (US);
Richard L King, Hollis, NH (US);
Robert C Miller, Braintree, MA (US);
Ming T Miu, Chelmsford, MA (US);
Theodore R Staplin, Jr, Chelmsford, MA (US);
Honeywell Information Systems Inc., Waltham, MA (US);
Abstract
In a data processing system which includes a central processing unit (CPU), main memory and a plurality of input/output controllers (IOCs) connected to a common bus information can be transferred between the main memory and CPU and main memory and the IOCs. Logic is provided within the CPU to align a byte of data on the data lines of the common bus such that it can be taken from the data lines by the main memory and written into a multi byte word without further alignment. Logic is provided within the CPU to extract from a multi byte word of data read from main memory and appearing on the common bus data lines the appropriate byte of data and to align it on the common bus data lines such that an IOC may pass the data byte to a peripheral device without further alignment.