Renesas H8S/2628 Informações Técnicas descarregar pdf (Página 253)

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The [R] mark shows that the value of the variable can be updated during user program execution.

For updating of the content of the variable that has been registered in the [Watch] window, there are the

following three methods:

1. Use the Monitor function without halting the user program

The read/write signal of the MCU is set as a trigger and holds the address bus and data bus values to update the

value of the variable.

Note: Although the realtime operation is retained, the size and number points to be monitored are limited. For

the Monitor function, refer to section 5.9, Displaying Memory Contents in Realtime.

2. Read the memory content directly from the HEW to update the values without halting the user program since

the bus mastership is owned by the emulator

Note: While the emulator reserves the bus mastership, the realtime operation is disabled because the CPU stops

operation. This method is only available for accessing the internal ROM, internal RAM, and emulation

memory.

The area used here or this method may not be available depending on the emulator in use. For details,

refer to section 8, Software Specifications Specific to This Product, or [Enable read and write on the fly]

on the [General] page of the [Configuration Properties] dialog box in the online help.

3. Temporarily stops the user program and reads the memory contents

Note: The realtime operation is disabled because the user program is stopped temporarily. This method is only

available for accessing the areas (internal I/O, DTCRAM, and user memory) other than those in item 2

mentioned above.

It is possible to recognize the method for updating the value during user program execution according to the

color of the [R] mark.

Blue-outline [R]: The variable's address is within the range that has been set for the monitoring function and

the data is readable by using the monitoring function.

Blue [R]: An updated value of the data at this location has been read by the monitoring function.

Black-outline [R]: The variable's address is outside the range that has been set for the monitoring function and

the data is not readable by using the monitoring function.

Black [R]: A value has been updated by reading the normal data.

Notes: 1. This function can be set per variable or per element or body for structures of data.

2. The color of an [R] in the [Name] column changes according to the trace and monitoring settings.

3. The information is lost when it is scrolled out of the [Watch] window and when the window is

closed.

4. A variable that is allocated to a register cannot be selected for monitoring.

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