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:
Jun. 27, 2000
Filed:
Feb. 20, 1998
David C Johnson, Roseville, MN (US);
Gary J Lucas, Pine Springs, MN (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A method and apparatus for reducing processor response time to selected transfer instructions in an instruction processor using a plurality of memory banks including four banks in a basic mode and one memory bank in an extended mode. This invention provides fast transfer hardware to improve the response time by a speed up transfer for normal extended mode transfer instructions only. The bank descriptor of the instruction is used to determine appropriate transfer instructions which are then tested for characteristics indicating whether a fast transfer is possible. The fast transfer process requires fewer checks than the previous apparatus which accelerates the response to selected transfer instructions by one cycle.