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Chapter 12:
Trace Trigger
A mask can be used to specify a range with a 32-bit value that marks valid bits
in addresses or data. For example, to trigger only on addresses in the range
0x000015xx (where xx are "don't care" values), you could enter the
command:
Trace
Status values
Status conditions are the types of bus activities you wish to specify. The
following keywords are used to specify the status condition:
Read
Write
Size
FnCde
CycTyp
Addresses specified witha a CycTyp of Fetch will be masked to the size
specified by Debugger Option Trace Fetch_Align.
Breaking on triggers
Enter the BrkOnTrg keyword to cause the user program to halt when the
trigger term is detected.
Trigger position
Enter the PosnTrig keyword to specify the position of the trigger condition
in the trace buffer. You can specify the trigger position to be one of the
following:
Start
502
Trigger Address Is
0x1500 &= 0xffffff00
where &= is the bit mask operator.
specifies read operation
specifies write operation
specifies access size (byte, word, or long)
specifies function code ( data or program, supervisor or user
mode)
specifies cycle type (Fetch or CPU)
The trigger is at the start of the trace buffer.
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