Notes - Renesas SH-4A User Manual

Microcomputer development environment system
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5.9.12

Notes

1. Tolerances
The profiling function internally breaks user program execution, collects the measured data,
and re-executes the user program.
Since the function also counts when the measured item is generated at break or re-execution,
tolerances will be included in the measured profile value.
The measured value of this function should be the reference.
2. Functions that cannot be used while the profiling function is being used
(a) On-chip performance analysis function
The on-chip performance analysis function cannot be used when the profiling function is
enabled.
(b) Step function
When the profiling function is enabled, do not use the step function. The profile data
cannot be measured correctly.
(c) Internal trace function
When the profiling function is enabled, it is invalid to select the internal trace mode as all
items of the internal trace mode are internally selected. Do not use the internal trace when
the profiling function is enabled.
(d) Halt function
When the profiling function is enabled, do not use the halt function of the internal, AUD,
external bus, and MFI traces.
(e) Memory access during user program execution
When the profiling function is enabled, memory access is disabled during user program
execution.
(f) When the profiling function is used, a break occurs if a branch instruction is generated.
Accordingly, the realtime emulation will not be performed. In addition, since the emulator
firmware is controlled on generation of a break, the executed result of the branch
instruction may be displayed on the [Internal/AUD/Usermemory trace] window when the
execution is returned to the user program from the emulator firmware. In this case,
**EML** is displayed.
(g) When the profiling function is used, do not use the function of Break Condition 3.
(h) When the profiling function is used, do not set [Hardware break enable] for [Emulation
mode] in the [Configuration] dialog box.
(i) When the profiling function is used, the PC and SR values are displayed as undefined on
the status bar.
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