Excavating
Patent
1996-02-28
1998-12-01
Nguyen, Hoa T.
Excavating
371 223, 39518318, 39518306, G01R 3128, G06F 1122, G06F 1128
Patent
active
058449213
ABSTRACT:
A hybrid circuit board capable of operating in a functional mode and a test mode includes macro block circuitry and non-macro block circuitry surrounding the macro block circuitry. The circuit board includes a test bridge circuit coupling the macro block circuitry to the surrounding non-macro block circuitry during the functional mode and for bypassing the macro block circuitry during the test mode. The test bridge circuit is responsive to a mode signal for isolating outputs of the macro block and for coupling the inputs of the macro block to isolated outputs of the macro block during the test mode. A mapping circuit maps the inputs of the macro block to the inputs of the non-macro circuit.
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Bou-Ghazale Silvio
Weitzel Stephen Douglas
International Business Machines - Corporation
Nguyen Hoa T.
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