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:
Aug. 02, 1983
Filed:
Sep. 29, 1980
Applicant:
Inventors:
Kiyoshi H Terakawa, Framingham, MA (US);
Henry F Hartley, Lowell, MA (US);
Assignee:
Honeywell Information Systems Inc., Waltham, MA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364200 ;
Abstract
A writeable control store in a data processing system is provided with a dual mode capability. Coupled with the control store in the system is a central processing unit which may provide the next address of the control store's memory dependent upon the mode of the control store. Otherwise, also dependent upon such mode, the control store memory is addressed, dependent upon the results of tests conducted in the central processing unit, by one of at least two alternative addresses. The control words addressed in the writeable control store are used to control the operation of the central processing unit.