• To set up a Condition trace specification.
• To set up a Sequence trace specification.
• To store and load trace specifications.
To set up an appropriate trace specification
When you want to trigger the analyzer on the occurrence of one state, use the Trigger Store Condition dialog box to set up the trace specification.
When you want to trigger the analyzer on a sequence of more than two states, use the Sequence dialog box to set up the trace specification.
To set up a Condition trace specification
The HP Debug User Interface’s Condition trace function is useful when you want to trace states that satisfy condition B after condition A is satisfied.
Condition A is called the trigger condition and condition B is called the store condition.
1 Choose the Trace→Condition... (ALT, T, C) command from the Trace window’s control menu.
The Trace Trigger Store Condition dialog box appears.
2 Specify the trigger condition using the Address: and Data: text boxes and the Status check box within the Trace Condition group box.
3 Specify the trigger position by selecting the trigger start, trigger center, or trigger end option in the Trigger Position group box.
4 Specify the store condition using the Address: and Data: text boxes and the Status check box within the Store Condition group box.
5 Click the OK button to set up the analyzer and start the trace.
You can store the setting specified in the dialog box in a file and load it when you want to use the same or a similar setting.
Example To set access to the "convert_case" function as the trigger condition and store only states with write status before and after the trigger condition:
Example To specify the trigger condition as any address where write cycles occur in the range 1000h through 1fffh:
To set up a Sequence trace specification
Sequence trace specifications let you trigger the analyzer on a sequence of several captured states.
The HP Debug User Interface supports eight sequence levels. When a trace is started, the first sequence level is active. Entry into one of the other sequence levels (you specify which) will trigger the analyzer. Each level lets you specify one condition that, when satisfied by a captured state, will cause branches to other levels.
1 Choose the Trace→Sequence... (ALT, T, S) command from the Trace window’s control menu.
2 Specify While storing, Branch at, and To for each sequence level you will use.
3 Specify which sequence level to trigger on.
The analyzer triggers on entry to the specified level. Therefore, the condition that causes a branch to the specified level actually triggers the analyzer.
4 Specify the restart, prestore, and count conditions.
5 Choose the resources used for the condition specified above from the Pattern/Range: list box by double-clicking and specifying the address range, data range, or status to be traced and the trace pattern.
6 Specify the trigger position by selecting the trigger start, trigger center, or trigger end option.
7 If you want emulator execution to break to the monitor when the trigger condition occurs, select the Break On Trigger check box.
8 Click the OK button to set up the analyzer and start the trace.
The Trace→Sequence... (ALT, T, S) command calls the Sequential Trace dialog box, where you make the following trace specifications:
You can store the setting specified in the dialog box in a file and load it when you want to use the same or a similar setting.
Selecting While storing, Branch at, Restart, Prestore, or Count options opens the Condition dialog box.
To set the conditions using the Condition dialog box:
• Specify the condition type.
Choose options in the Expression Type group box.
Any state Any states satisfy the condition you set.
No state No states satisfy the condition you set.
Define state Combinations of trace patterns defined in the Expression group box satisfy the condition you set.
Time Counts trace in time. This option is available only when you select Count.
• Specify the condition.
Choose Trace patterns "A" through "H", "Range", and "Not Range". You can specify two sets of patterns, and resources within a set may be combined using the OR and NOR logical operators. Resources in the two sets may be combined using the OR and AND logical operators.
The address or data range and trace pattern resources are defined by double-clicking on the resource name in the Pattern/Range list box.
If you double-click on a pattern name in the Pattern/Range list box, the Trace Pattern dialog box appears to let you specify address, data, and status values.
By selecting the NOT check box, you can specify all states other than those identified by the address, data, and status values.
Trace Range dialog box appears to let you select and address range for the specified range and enter the start and end addresses in the range. Enter the range with the format:<Start_address>..<End_address>.
Example To specify execution of "convert_case" and "next_message" as the trigger sequence: