To Monitor Two Coprocessors In A Target System - HP 1660CP Series User Manual

To monitor two coprocessors in a target system

Debugging coprocessor systems can be a complex task. Replicated systems
and contention for shared resources increase the potential problems. Using
two state analyzers with preprocessors can make it much easier to discover
the source of such problems. For example, you may want to set up one
analyzer to trigger only when a certain problem occurs, and set up the other
analyzer to be armed by the first analyzer so that it takes its trace only when
the first analyzer recognizes its trigger. This will let you observe the behavior
of both coprocessors during the occurrence of a problem.
Set up both analyzers as state analyzers.
1
Go to the first analyzer's Trigger menu.
2
Set the second analyzer to be run from the first analyzer.
3
Turn on "Count Time".
4
Set the first analyzer to trigger on the problem condition.
5
Some problems may involve complex sequences of conditions. See earlier
examples in this chapter for more information on defining trigger sequences.
Go to the Trigger menu of the second analyzer.
6
Check that the second analyzer is triggering on arm and that Count
7
Time is set.
After the measurement is complete, you can interleave the trace lists of both
state analyzers to see the activity executed by both coprocessors during
related clock cycles.
You can use a similar procedure if you have only one processor, but want to
monitor its activity with that of other system nodes, such as chip-select lines,
I/O activity, or behavior of a watchdog timer. In some instances it may be
easier to look at related activity with a timing analyzer.
See Also
"Special Displays" in this chapter.
"To trigger timing analysis of a count-down on a set of data lines" in this
chapter.
Cross-Arming Trigger Examples
To monitor two coprocessors in a target system
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