Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Fast linear tag validation unit for use in microprocessor










Image Number 8 for United States Patent #6157986.

A linearly addressed cache capable of fast linear tag validation after a context switch or a translation lookaside buffer (TLB) flush. The cache is configured to validate multiple linear address tags to improve performance in systems which experience frequent context switches or TLB flushes. The cache comprises: a data array configured to store a plurality of cache lines, a linear tag array, a physical tag array, and a TLB. Each array is configured to receive a portion of a requested address. Each linear tag stored in the linear tag array corresponds to one cache line stored within the data array. Each physical tag stored in the physical tag array also corresponds to one cache line stored within the data array. The TLB is configured to store linear to physical address translations, while the linear tag array is configured to store status information for each linear tag. The status information comprises a linear tag valid bit and an enable compare bit. The linear tag array is configured as a content addressable memory and is configured to perform a parallel comparison of a first portion of the requested address with each of the plurality of stored linear tags. If one of the tags match, the linear tag array sets the corresponding valid bits if the corresponding enable compare bits are set. The linear tag array may also be configured to clear the enable compare bits in parallel.








 
 
  Recently Added Patents
Process for producing polyols
System or method to assist and automate an information security classification and marking process for government and non-government organizations for information of an electronic document
Computer network running a distributed application
Method and device for generating low-jitter clock
Method for conformal plasma immersed ion implantation assisted by atomic layer deposition
Identification wristband
Eye therapy system
  Randomly Featured Patents
Systems and methods for sorting in a package delivery system
Apparatus for grinding floor surfaces and/or cutting grooves in floors
Position confirming catheter
Hydrodynamic coupling device
Aboveground anchor support assembly for a pipeline
Electro-luminescence display device and driving apparatus thereof
Hair transplant harvesting device and method for its use
Solid, rapid-setting, rigid polyurethanes
Method and apparatus for comminution of coal and other materials to ultrafine sizes
Laser detector with distance-to-beam strip sensor