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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.:

US 4866599 B1

PDFFull Text
Date of Patent:
Sep. 12, 1989

Filed:

Dec. 19, 1986

Call instruction, return instruction and trap procedure for ring

Applicant:
Inventors:

Victor M Morganti, Lincoln, MA (US);

Patrick E Prange, Brookline, MA (US);

Assignee:

Bull HN Information Systems Inc., Billerica, MA (US);

Attorneys:

Holloway; William W.

Driscoll; Faith F.

Solakian; John S.

Primary Examiner:

Archie E Williams, Jr

Assistant Examiner:

Robert B Harrell

Int. Cl.
CPC ...
G06F / ; G06F / ; G06F / ; G06F / ;
U.S. Cl.
CPC ...
364200 ; 3642563 ; 3642282 ; 364230 ; 3642301 ; 3642304 ; 3642321 ;
Abstract

In combination with a multiprocessing and multiprogramming computer system having a ring protection mechanism for protecting computer programs from unauthorized access, a new architecture for the execution of the call instruction, the return instruction, and the trap procedure is implemented partly in firmware and partly in hardware. The architecture includes a new stack mechanism for storing hardware managed control information in a control frame and software controlled data in a data frame.

Find Patent Forward Citations

Morganti, Victor. (1989). Call instruction, return instruction and trap procedure for ring (U.S. Patent No. 4866599). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4866599

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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