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Data processing with configurable registers

  • US 7,823,033 B2
  • Filed: 07/26/2006
  • Issued: 10/26/2010
  • Est. Priority Date: 07/26/2006
  • Status: Active Grant
First Claim
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1. In a data processing system, a method comprising:

  • providing a plurality of general purpose registers (GPRs) which are included as part of a user'"'"'s programming model for the data processing system;

    entering a test mode;

    during the test mode, configuring a portion of the plurality of general purpose registers to operate as at least one multiple input shift register (MISR) wherein a portion of a register line is configured to operate in the test mode and a remaining portion of the register line is configured to remain in a normal mode of operation;

    during the test mode, each register in the portion of the plurality of general purpose registers generating a signature;

    exiting the test mode; and

    after exiting the test mode, using the portion of the plurality of general purpose registers as general purpose registers for normal program execution.

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