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. 16, 1998
Filed:
Oct. 21, 1996
Sundaravarathan R Iyengar, San Jose, CA (US);
Mustafiz R Choudhury, Sunnyvale, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A computer system includes a microprocessor having an internal cache memory and control unit that performs write-back operations to external memory responsive to an external signal indicating that a valid external address has been driven onto the address pins of the microprocessor. Under control of a state machine control, a unit within the microprocessor provides an indication signal to the external component that a current write cycle is a write-back cycle; this enables the system to distinguish between an ongoing write cycle generated by the processor, and a new write-back cycle. An additional signal is generated by the microprocessor in the event that the external address indicates a cache hit to a modified line.