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:
Dec. 07, 1993
Filed:
Aug. 30, 1991
Souichi Kobayashi, Itami, JP;
Masahito Matuo, Itami, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A data processor which includes a pipeline processing unit that processes instructions, including a POP instruction. The POP instruction includes a destination operand field and has a stack top as a source. The destination for the POP instruction can be register or a memory location. The pipeline processing unit is capable of performing pre-processing with respect to both the source and destination operands prior to execution by an execution stage of the pipeline processing unit. When the destination is a memory location, pre-processing of the destination uses information from the destination operand field. When the destination operand is a general register, steps for pre-processing of the destination are merged prior to the execution stage. Pre-processing of the source uses information from the stackpointer and is conducted prior to the execution phase in response to the decoding of the operation code field of the POP instruction.