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Distributed execution of mode mismatched commands in multiprocessor computer systems

  • US 5,706,514 A
  • Filed: 03/04/1996
  • Issued: 01/06/1998
  • Est. Priority Date: 03/04/1996
  • Status: Expired due to Term
First Claim
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1. A method for operating a muliprocessor system, the multiprocessor computer system including a multimode first processor capable configured for operations in a first processing mode, a second processor capable of being configured for operations in a second processing mode incompatible with said first processing mode, means for storing a code vector, and means for storing data and command parameters accessible to both said first and second processors, a method for processing said command encountered by said first processor which cannot be executed while said first microprocessor is in said first processing mode, the method comprising the steps of:

  • said first processor determining whether said second processor is available for processing said command; and

    if said second processor is available for processing said command, said first processor offloading said command to said second processor, said offloading steps comprising;

    said first processor downloading data and command parameters required for successful processing of said command to said storing means;

    said first processor placing a code vector pointing to source code necessary to complete processing of said command in said code vector storing means;

    said first processor activating said second processor;

    said second processor utilizing said stored data and command parameters and said stored code vector to commence processing of said command;

    said second processor storing results obtained from processing said command to said data and command parameters storage means;

    said second processor notifying said first processor when said command processing is complete; and

    said first processor uploading said stored results for use in a subsequent task when said second processor notification is received.

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