Methods for scan path debugging
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United States of America Patent
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Apr 25, 1995
Grant Date -
N/A
app pub date -
Nov 1, 1993
filing date -
Nov 1, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A scan path debugger isolates and identifies hardware and software faults in a computer system containing scan path logic. A user can readily define what information is to be examined and in what format. The user can toggle between displaying information in data-aligned format or time-aligned format. The user may temporarily suspend control of the scan path debugger to allow the system to be controlled temporarily by a different, unrelated program. The user can check the operation of the system under different microcode files. The user can also save the complete logic state of the system under test, execute one or more scan path debugger instructions while observing the results, restore the saved state, execute the same or different instructions, and observe the results.
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