Programmable extended compression mask for dynamic trace

Details Programmable extended compression mask for dynamic trace Programmable extended compression mask for dynamic trace

2007-01-09

2007-01-09

Peyton, Tammara (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral adapting

C710S015000, C703S023000, C714S724000

Reexamination Certificate

active

10302189

ABSTRACT:
This invention provides trace address compression by comparing respective bytes of a current trace address with a stored comparison address. Only the least significant bytes of the current trace address that do not match the comparison address or are less significant than any section of the current trace address that does not match the comparison address are transmitted. This sometimes reduces the amount of data that needs to be transmitted. The comparison address is specified by a central processing unit via a memory mapped register write operation.

REFERENCES:
patent: 4087794 (1978-05-01), Beausoleil et al.
patent: 4325120 (1982-04-01), Colley et al.
patent: 5140687 (1992-08-01), Dye et al.
patent: 5848264 (1998-12-01), Baird et al.
patent: 2001/0025237 (2001-09-01), Cofler et al.

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