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:
Apr. 24, 2001
Filed:
Dec. 16, 1998
Applicant:
Inventors:
Gregory Poivre, Grenoble, FR;
Jean-Hugues Bosset, Grenoble, FR;
Assignee:
STMicroelectronics S.A., Gentilly, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/455 ; G06F 1/340 ;
U.S. Cl.
CPC ...
G06F 9/455 ; G06F 1/340 ;
Abstract
The microcontroller accesses a battery of hidden registers used essentially in the field of emulation. The fact that there is a large number of hidden registers means that it is not possible to assign them an address by which they can be accessed directly. Since this battery of hidden registers has to be accessible by a host circuit and by a microprocessor, recourse is had to a method of indirect addressing by means of two peripheral control registers. A priority signal obliges the microprocessor to wait for the read and write resources to be released by the host circuit to perform these instructions.