Reloadable word recognizer for logic analyzer

Details Reloadable word recognizer for logic analyzer Reloadable word recognizer for logic analyzer

2007-09-18

2007-09-18

Cosimano, Edward R (Department: 2863)

Data processing: measuring, calibrating, or testing

Testing system

Of circuit

C073S432100, C073S865900, C324S073100, C324S500000, C324S527000, C324S555000, C702S108000, C702S117000, C702S119000, C702S123000, C714S025000, C714S037000, C714S039000

Reexamination Certificate

active

10253621

ABSTRACT:
A test and measurement instrument such as a Logic Analyzer, or the like, has at least one Reloadable Word Recognizer whose reference value can be loaded by a trigger machine with a current acquired data sample while data is being acquired. In a second embodiment useful for performing memory testing, the reloadable word recognizer is used in cooperation with two conventional word recognizers. In a third embodiment, a delay unit is employed to provide delayed input data words as reference words. In a fourth embodiment, an offset register and adder are used to modify the input data words before storing them. A fifth embodiment provides for substantially immediate use of base addresses of relocatable subroutines and stack-based variables recovered from a data stream acquired from a system under test.

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