User`s manual

PPC405CR – AMCC PowerPC 32-bit RISC Processor

Full-feature debugging is of course enjoyed at the source code level – from within the source

code file itself. To a lesser extent, debugging can also be carried out from a dedicated debug

panel for the processor. To access

this panel, first double-click on the icon representing the

physical PPC405CR device, in the

Hard Devices region of the view. The Instrument Rack –

Hard Devices

panel will appear, with the PPC405CR device added to the rack (Figure 16).

Any 'soft' core processor that you

have included in the design will

appear, when double-clicked, as an

Instrument in the

Instrument Rack

– Soft Devices

panel (along with

any other Nexus-enabled devices).

Figure 16. Accessing debug features from the processor's instrument panel

The Nexus Debugger button provides access to the associated debug panel (Figure 17), which in turn allows you to interrogate

and to a lighter extent control, debugging of the processor and its embedded code, notably with respect to the registers and

memory.

One key feature of the debug panel is that it enables you to specify (and therefore change) the embedded code (HEX file) that is

downloaded to the processor, quickly and efficiently.

Figure 17. Processor debugging using the associated processor debug panel

The debug panels for each of the debug-enabled processors are standard panels and, as such, can be readily accessed from the View »

Workspace Panels » Instruments

sub menu, or by clicking on the Instruments button at the bottom of the application window and choosing

the required panel – for the processor you wish to debug – from the subsequent pop-up menu.

24 CR0161 (v2.0) March 11, 2008