Logic analyzer for software
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United States of America Patent
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Feb 16, 1999
Issued Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Jan 24, 1995
priority date (Note) -
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status (Latency Note)
Importance
Abstract
The present invention logs events which occur in the target software, and stores these in a buffer for periodic uploading to a host computer. Such events include the context switching of particular software tasks, and task status at such context switch times, along with events triggering such a context switch, or other events. The host computer reconstructs the real-time status of the target software from the limited event data uploaded to it. The status information is then displayed in a user-friendly manner. This provides the ability to perform a logic analyzer function on real-time software. A display having multiple rows, with one for each task or interrupt level, is provided. Along a time line, an indicator shows the status of each program, with icons indicating events and any change in status.
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