Analog Devices EZ-KIT Lite ADSP-BF533, Руководство пользователя, Страница: 56 / 108

Using EZ-KIT Lite Vi+ Interface
2-16 ADSP-BF533 EZ-KIT Lite Evaluation System Manual
The performance monitor is a 32-bit counter that allows you to track
occurrences of events within the core and use these to analyze system
behavior. When the counter reaches zero, it causes an exception or emula-
tion event, as specified by the
Type option.
Boot Load
Choosing Boot Load from the Settings menu runs the processor and per-
forms a hard reset on the board. This command saves you from having to
shut down Vi+, reset the EZ-KIT Lite board, and bring up Visu-
alDSP++ again when you want to perform a hard reset.
Use this feature when loading debug boot code from an external part or
when you want to put the device into a known state.
Table 2-10. Performance Monitor Options
Option Description
Enable Enables performance monitoring.
Mode Determines the mode of operation for tracking events:
Disabled disables the monitor.
User tracks while in user mode.
Supervisor tracks while in supervisor mode.
Both tracks while in both user mode and supervisor mode.
Type Determines the type of event occurring on a match:
Exception causes an exception to occur. You can install a handler to detect
and handle this exception.
Emulation halts the DSP.
Event Specifies the tracked event. Refer to your processor’s Hardware Reference for
details. Events include stalls, cache hits or misses, loop iterations, branches,
interrupts, loads, stores, DMA accesses, and more.
Count Specifies the count. When the 32-bit counter reaches zero, an exception or
emulation event occurs. For example, to halt on the third occurrence of an
event, load the count with
0xFFFFFFFE
and set Type to Emulation . The
counter counts up and wraps around, causing the processor to halt as desired.