Using EZ-KIT Lite Vi+ Interface
2-18
ADSP-21262 EZ-KIT Lite Evaluation System Manual
Tips and Tricks Using Hardware Breakpoints
Be aware of the following tips and tricks when using hardware breakpoints
on ADSP-21262 processors.
Latency
For SHARC processors, hardware breakpoints do not assert until two (2)
instruction cycles after the actual break condition occurs
Restrictions
When using hardware breakpoints, do not place breaks at any address
where a
JUMP
,
CALL
, or
IDLE
instruction would be illegal.
Do not place breaks in the last few instructions of a
DO LOOP
or in the
delay slots of a delayed branch. For more information on these illegal loca-
tions, refer to your DSP’s Hardware Reference.
Setting a Breakpoint on a Single Address
To set a breakpoint on a single address, set the
Start Address
equal to the
End Address
.
External Port
Enables external port breakpoints.External port (EP) breakpoints are trig-
gered by accesses made through the External Port. Use an EP breakpoint to
break on accesses made to any external device that may be tied to the EP,
such as external memory.
AND All Break-
points
ANDs the interrupts to form the composite interrupt. Normally, the group
interrupts are ORed to create a composite interrupt.
Table 2-10. Other Hardware Breakpoint Options (Cont’d)
Option
Description
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