×

Programmable system for invalidating pending requests within a data processing system

  • US 6,401,223 B1
  • Filed: 05/21/1999
  • Issued: 06/04/2002
  • Est. Priority Date: 05/21/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. For use in a data processing system having multiple requesting units making requests to multiple receiving units wherein each of the requests includes multiple request data fields, the data processing system further including error indicators each to indicate a respective error condition occurring within the data processing system and wherein each of the error indicators is associated with an error indication value, and is further associated with a respective one of the multiple request data fields, a request invalidation system, comprising:

  • a storage unit to store the requests;

    a programmable mode control logic to programmably select one of the multiple request data fields as an invalidation field; and

    a storage unit control logic coupled to said storage unit, coupled to said programmable mode control logic, and further coupled to detect the assertion of any of the error indicators, said storage unit control logic to cause the removal of any request from said storage unit that has a value stored in said selected invalidation field having a predetermined relationship to the error indication value associated with any of the asserted error indicators that are associated with said invalidation field.

View all claims
  • 12 Assignments
Timeline View
Assignment View
    ×
    ×