To Trigger After A Sequence Of States - HP 64782 User Manual

Using the Emulation Analyzer

To trigger after a sequence of states

To trigger after a sequence of states
•
Create your first specification form on the command line. That will
enter the proper format in the Trace Specification Selection dialog
box. Obtain the dialog box by choosing Trace→Trace Spec... You
can click on your specification in the dialog box, edit it if desired, and
click OK.
•
Using the command line, specify a trace sequence by entering:
trace find_sequence <bus_state> occurs <#times>
then <bus_state> occurs <#times> trigger
<bus_state>
<bus_state> represents a combination of address, data and status
expressions that must be matched to satisfy the trigger or sequence qualifier.
<#times> is the number of times that bus state must occur to satisfy the
qualifier.
The analyzer's sequencer has several levels (also called sequence terms).
Each state in the series of states to be found before triggering, as well as the
trigger state, is associated with a sequence term.
When triggering using the sequencer, the analyzer searches for the state
associated with the first sequence term. When that state is captured, the
analyzer starts searching for the state associated with the second term, and
so on. The last sequence term used is associated with the trigger state.
When the trigger state is captured the analyzer is triggered. Up to seven
sequence terms and an optional occurrence count for each term are available.
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