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.

Date of Patent:
Dec. 14, 1976

Filed:

Dec. 02, 1974
Applicant:
Inventors:

Jean-Claude Cassonnet, Conflans-Ste-Honorine, FR;

Andre Milleret, Santeny, FR;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
3401725 ;
Abstract

A data processing system having a common data bus to which access is gained by at least a control store, an arithmetic logic unit (ALU) and an emulator unit (EMU). The control store includes a microprogrammable switch for enabling either the EMU or the ALU to process instructions received on a common bus. Common opcode bits in the instruction are interpreted by either the ALU or the EMU and responded to thereby depending upon the state of a control register in the control store. The instructions are stored in a control store array in the control store coupled with the bus, and allows operation of either the ALU (native mode of operation) or the EMU (non-native mode of operation), dependent upon the microprogram's instruction in the control store thereby giving increased efficiency of operation of the system.


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Cassonnet, Jean-Claude. (1976). Data processing system with a microprogrammed dispatcher for working (U.S. Patent No. 3997895). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3997895

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