Monitoring a microprocessor programme by sending time-trackable messages
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United States of America Patent
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Nov 9, 2010
Issued Date -
N/A
app pub date -
Oct 29, 2002
filing date -
Oct 29, 2002
priority date (Note) -
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Abstract
The invention concerns a monitoring device (18', 18'') integrated to the chip of a microprocessor (12) executing a series of instructions comprising message calculating means (36) for upon each execution of an instruction, producing a corresponding digital message; a buffer memory (34) for storing each message produced; and a plurality of output terminals (FA, FB, FC) connected to an external analyzing tool (24), each output terminal (FA, FB, FC) being associated with one type of instructions; the message calculating means (36) modifying the state of the output terminal (FA, FB, FC) associated with one type of instructions at the time when a message corresponding to said type of instructions is stored in the buffer memory.
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