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:
Aug. 14, 2001
Filed:
May. 26, 1999
Rivka Blum, Jerusalem, IL;
Meny Yanni, Tel Aviv, IL;
Infineon Technologies AG l. GR., Munich, DE;
Abstract
A method for insertion of a dynamic number of implicit nop instructions by the microprocessor at run-time. The implicit nop instructor is a no operation instruction which is executed by the microprocessor without placing an actual nop instruction in the program itself. The method of the present invention enables the appropriate number of implicit nop instructions to be automatically calculated and executed for every occurrence of a multi-cycle instruction. Hereinafter, the term automatically refers to a process which occurs without the direct intervention of the programmer or higher-language compiler. The appropriate number of implicit nop instructions is automatically calculated by the microprocessor, by subtracting the number of IDSI from the total number of delay-slots which are required. The number of IDSI is preferably determined by the assembler, and then made available to the microprocessor. More preferably, this number is placed in a delay-slot field in the coded instruction by the assembler, and is then retrieved from the delay-slot field by the microprocessor. Thus, the method of the present invention enables the microprocessor to automatically insert the required number of implicit nop instructions, without requiring extra memory resources and without forcing the programmer or higher-language compiler to insert nop instructions into each unused delay-slot.