Method and apparatus for selecting a register file in a data processing system
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United States of America Patent
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Sep 22, 1998
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N/A
app pub date -
Sep 16, 1996
filing date -
Sep 16, 1996
priority date (Note) -
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Abstract
A data processing system selects between a general register file and an alternate register file during an operation such that resources of the data processor may be more flexibly mapped to a context of the data processing system and, therefore, be more efficiently utilized. A control bit in a processor status register (PSR) is used to select between a general register file and an alternate register file depending upon a logic value to which it is set to a during an exception handling process.
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