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:
Sep. 08, 1998
Filed:
Feb. 23, 1996
Mark W Hervin, Dallas, TX (US);
Raul A Garibay, Jr, Los Altos, CA (US);
Cyrix Corporation, Richardson, TX (US);
Abstract
In a pipelined processor having at least one execution pipeline for executing instructions, the execution pipeline including ID (decode), AC (address calculation), and EX (execution) processing stages, the processor capable of addressing segments of system memory coupled thereto, a circuit for, and method of, setting a segment access indicator associated with a segment of the system memory being accessed by the processor. The circuit includes: (a) exception generating circuitry to generate an exception when the segment access indicator requires setting and (b) exception handling circuitry, invoked by the processor in response to generation of the exception, to flush the execution pipeline of instructions following a segment load instruction, set the segment access indicator and load an address pointer of the processor with an address corresponding to a specified location within the segment.