Patents Assigned to Motorola Computer X
  • Write-shared cache circuit for multiprocessor system
    Patent number: 4959777
    Abstract: A "write-shared" cache circuit for multiprocessor systems maintains data consistency throughout the system and eliminates non-essential bus accesses by utilizing additional bus lines between caches of the system and by utilizing additional logic in order to enhance the intercache communication. Data is only written through to the system bus when the data is labeled "shared". A write-miss is read only once on the system bus in an "invalidate" cycle, and then it is written only to the requesting cache.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: September 25, 1990
    Assignee: Motorola Computer X
    Inventor: Thomas H. Holman, Jr.