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:
Oct. 03, 2000
Filed:
Sep. 12, 1997
Rod G Fleck, Mountain View, CA (US);
Roger D Arnold, Sunnyvale, CA (US);
Bruce Holmer, Belmont, CA (US);
Vojin G Oklobdzija, Berkeley, CA (US);
Eric Chesters, Mountain View, CA (US);
Siemens Aktiengesellschaft, Munich, DE;
Abstract
The present invention relates to a method of context switching from a first task to a second task in a data processing unit having a register file with a plurality of general purpose registers and a context switch register, a memory comprising a previous context save area and an unused context save area. The memory is coupled with the register file and an instruction control unit with a program counter register and a program status word register coupled with the memory and the register file. The method comprises the steps of acquiring a new save area from said unused save area, storing the context of the first task in said new area, linking the new area with said previous context save area.