Electrical computers and digital data processing systems: input/ – Intrasystem connection – Bus access regulation
Reexamination Certificate
2005-05-25
2009-02-17
Dang, Khanh (Department: 2111)
Electrical computers and digital data processing systems: input/
Intrasystem connection
Bus access regulation
C327S157000, C716S030000, C716S030000, C716S030000
Reexamination Certificate
active
07493434
ABSTRACT:
A method that enables testing any point (target point) within a core, including a point within a combinatorial circuit of a core, permits testing of points that are not otherwise unobservable in normal debugging processes. Such a target point is tested by identifying a fanout cone from that point to observable outputs, and by performing one or more tests, where each test sensitizes one or more paths that extend the signal of the target point, or its complement, to one or more of the observable outputs, and ascertains the values at those observable outputs. By having more than one observable output at which the signal of target point (or its complement) is tested significantly increases the level of confidence in the test when the observable points concur in the signal value of the target point.
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Brendzel Henry
DAFCA, Inc.
Daley Christopher A
Dang Khanh
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