HP 68302 User Manual page 190

To set up a "Sequence" trace specification
Sequence trace specifications let you trigger the analyzer on a sequence of
several captured states.
There are 8 sequence levels. When a trace is started, the first sequence level
is active. You select one of the remaining sequence levels as the level that,
when entered, will trigger the analyzer. Each level lets you specify two
conditions that, when satisfied by a captured state, will cause branches to
other levels:
if (state matches primary branch condition)
then GOTO (level associated with primary branch)
else if (state matches secondary branch condition)
then GOTO (level associated with secondary branch)
else
stay at current level
Note that if a state matches both the primary and secondary branch
conditions, the primary branch is taken.
Each sequence level also has a store condition that lets you specify the states
that get stored while at that level.
1
Choose the Trace→Sequence... (ALT, T, Q) command.
Specify the primary branch, secondary branch, and store conditions
2
for each sequence level you will use.
Specify which sequence level to trigger on. The analyzer triggers on
3
the entry to the specified level. Therefore, the condition that causes
a branch to the specified level actually triggers the analyzer.
Specify the count and prestore conditions.
4
Specify the trigger position by selecting the trigger start, trigger
5
center, or trigger end option.
Chapter 5: Debugging Programs
Setting Up Custom Trace Specifications
191