6.4.1. Working with the Map tab

To view the memory map:

  1. Connect to a suitable debug target.

  2. Enable memory mapping (see Enabling and disabling memory mapping).

  3. Load an image, for example dhrystone.axf

  4. Select View → Pane Views → Memory Map to display the Process Control pane and bring the Map tab to the front.

  5. Click on the plus signs to expand the entries, shown in Figure 6.4.

Memory map display

The Map tab displays a tree-like structure for each component of the memory map. There is an entry for each memory area defined in the image or for the processor. Each memory area shows the following information:


Start address of the memory area.


Size of the memory area.


The access rules for the memory area. This can be one of RAM, ROM, WOM, NOM, Auto, Prompt, or Flash. See Memory map configuration for more details.


This shows if a range within the memory area contains data loaded from an application program. For example:

File      scatter.axf:
ER_RO     0x00008000..+0x2DB4
ER_RW     0x0000ADB4..+0x0004
ER_ZI     0x0000AF40..+0x0188

A one-line text description can also be included, and is displayed in the Value column opposite the Access rule.

The way that memory is shown depends on your debug target because RealView Debugger populates this tab from:

  • built-in knowledge about the processor

  • target configuration information

  • the description in the execution vehicle.

Colored icons are used to show the type of memory defined, see Display colors.

With an image loaded, the Map tab is updated from details in the image itself. The memory map is also automatically updated if any registers change that affect memory mapping.

Copyright © 2003, 2004 ARM Limited. All rights reserved.ARM DUI 0234B