Flexible resource access in a microprocessor

Details Flexible resource access in a microprocessor Flexible resource access in a microprocessor

1998-11-17

1999-11-16

Treat, William M.

Electrical computers and digital processing systems: processing

Architecture based instruction processing

712208, 712227, 712 42, G06F 930

Patent

active

059875925

ABSTRACT:
A superscalar microprocessor defines a hierarchical structure of registers. The top level of the hierarchy includes performance critical registers and pointers to other levels of the hierarchy. A second level of the hierarchy may include special registers. Special registers may include arrays or groups of data. Special registers may be located in a special register file or remotely located throughout the microprocessor. Remote special registers are accessed via a special register bus. Resources throughout the microprocessor are defined as special registers. In this manner, resources throughout the microprocessor are accessed using special register move instructions that are handled in a manner similar to other register moves in instructions. Accordingly, adding and modifying resources within the microprocessor is transparent to the majority of the circuitry of the microprocessor. Thus, the present invention provides a uniform and flexible mechanism of communicating to resources of a microprocessor.

REFERENCES:
patent: 5574927 (1996-11-01), Scantlin
patent: 5606677 (1997-02-01), Balmer et al.
patent: 5752069 (1998-05-01), Roberts et al.
patent: 5787266 (1998-07-01), Johnson et al.

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