Fujitsu softune f2 mc-16 Manuel D’Utilisation

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CHAPTER 2  DEPENDENCE FUNCTIONS

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The address and status information can be sampled during program execution to record it in a trace buffer.

This function is called a trace. Data of the trace buffer can be used to make a detailed analysis of a program

execution history.

The trace buffer is in the form of a ring.  When it becomes full, it records the next data by automatically

overwriting the buffered data at the beginning.

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The simulator debugger can sample 1000 frames of trace data for the address of the executed instruction.

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While the trace function is enabled, data is always sampled and recorded in the trace buffer during execution

of a user program.

The program execution aborts due to a break factor such as a breakpoint, terminating the trace.

Furthermore, when the trace buffer becomes full, a program break can be invoked.  This break is called a

trace buffer full break.

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A number is assigned to each frame of sampled trace data.  This number is called a frame number.

The frame number is used to specify the display start position of the trace buffer.

The number 0 is assigned to the last-sampled trace data.  Negative values are assigned to trace data that have

been sampled before the arrival at the triggering position.

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 -3 

 -2 

 -1 

 0 

(Trigger 

point)