Renesas User System Interface Board HS7047ECH61H Uživatelský manuál stáhnout pdf (Strana 134)

3.8 Viewing the Trace Information

The emulator acquires the results of each instruction execution into the trace buffer as trace information and

displays it in the [Trace] window. The conditions for the trace information acquisition can be specified in the

[Trace Acquisition] dialog box.

Since trace information in bus-cycles is acquired by the hardware circuit and stored in the trace buffer, the

realtime operation is retained. The [Trace] window displays the content of the trace buffer, which records up to

128-k bus cycles from the last program run and is always updated.

Note: For notes on the trace functions, refer to section 5.6, Trace Functions.

3.8.1 Opening the [Trace] Window

To open the [Trace] window, choose [View -> Code -> Trace] or click the [Trace] toolbar button (

3.8.2 Acquiring Trace Information

When the emulator does not set the acquisition condition of the trace information, all bus cycles are acquired by

default without any condition (free trace mode).

In the free trace mode, trace acquisition is started with the execution of the user program and stopped by halting

the user program. The acquired trace information is displayed in the [Trace] window.

Figure 3.26 [Trace] Window

This window displays the following trace information items:

[PTR]: Cycle number in the trace buffer. When the most recent record is record 0, earlier

record numbers go backwards (-1, -2, ...). If a delay count has been set, the cycle

number where the trace stop condition has been satisfied is record 0. For the cycle

(during delay) executed until the trace has stopped, earlier record numbers go forward

(+1, +2, ...) the most recent record.

[Address]: Address bus value (8-digit hexadecimal)

[Code0]: Upper 16 bits of the executed instruction code

[Code1]: Lower 16 bits of the executed instruction code

[Data]: Data in byte, word, or longword units, displayed as 2-digit, 4-digit, or 8-digit

hexadecimal

1 2 ... 129 130 131 132 133 134 135 136 137 138 139 ... 242 243

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Renesas User System Interface Board HS7047ECH61H Uživatelský manuál Strana 134