Resources Contact Us Home
Method and apparatus for a line based non-blocking data cache

Image Number 3 for United States Patent #5555392.

A method and apparatus for providing a non-blocking cache that uses substantially less die area than a prior art non-blocking cache. In the present invention, pending count and ignore fill fields are added to each line of the cache. These fields are used in conjunction with a valid field (that indicates whether or not the line contains valid data) to keep track of the status of pending load operations that have resulted in cache misses. The pending field keeps a count of the number of outstanding load misses for the line. If a store occurs for an address of a line, the ignore fill field is set to indicate that any fills that are pending for the line are to be ignored because the pending fills will be supplying stale data to the line.

  Recently Added Patents
Combination immunotherapy for the treatment of cancer
High performance actuator motor
RFID device using single antenna for multiple resonant frequency ranges
Connector interface for a cable
Controlling generation of debug exceptions
Coding circuitry for difference-based data transformation
5-phenyl-pentanoic acid derivatives as matrix metalloproteinase inhibitors for the treatment of asthma and other diseases
  Randomly Featured Patents
Phase change memory structure with multiple resistance states and methods of programming and sensing same
Composting cage
Device for the infeed of discrete strips of tin foil in cigarette packaging machinery
Straddle type vehicle
Mobile phone
Adjustable drill guide
Buck-boost switching regulator and control circuit and method therefor
Extreme ultraviolet light source apparatus
Films and articles with good taste and/or odor performance
Radio-opaque polymeric biomaterials