HP 64782, Руководство пользователя, Страница: 231 / 554

To specify both sequencing and windowing
•
Create your first specification form on the command line. That will
enter the proper format in the Trace Specification Selection dialog
box. Obtain that 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, enter commands as follows:
•
Specify a trace sequence that starts with a window and ends with a
trigger by entering:
trace enable <bus_state> disable <bus_state>
find_sequence <bus_state> then <bus_state>
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.
You can use the sequencing and windowing specifications together to make
specification of complex qualifiers easier. If you use the windowing
specification, the sequence specification is limited to four sequence terms.
Also, note that when you use a windowing specification, you cannot use a
restart term with your sequence specification.
Example
Use the analyzer sequencer to trace states occurring between the start of the
example program and the call to the message interpreter, then trigger after
access to the variable that stores the value of current humidity, but only if it
is accessed after a specific series of events:
trace enable main disable proc_spec find_sequence
update_sys.get_targets
then update_sys.write_hdwr
trigger after current_humid
Using the Emulation Analyzer
To specify both sequencing and windowing
230