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Method and apparatus for transferring data in a computer system

  • US 6,199,144 B1
  • Filed: 12/31/1997
  • Issued: 03/06/2001
  • Est. Priority Date: 12/31/1997
  • Status: Expired due to Term
First Claim
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1. A method of manipulating data in a computer system, the method comprising:

  • executing a load instruction;

    requesting ownership of a bus;

    transferring a first data value from a first memory location to a second memory location via the bus during a single bus transaction in response to executing the load instruction; and

    requesting invalidation, during the single bus transaction, of a copy of the first data value stored in a third memory location, thereby allowing the first data value to be placed in an exclusive state in the second memory location without re-requesting ownership of the bus, if the load instruction indicates to do so.

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