Technical information

Renesas E10A-USB Emulator
Introductory Guide for SH/Tiny (SH7125)
6.3.6 Setting a Breakpoint
(1) Scroll the source code display to show line 48 by using the scroll bar.
Double-click line 48
Figure 6.31 Setting a Hardware Break
Here, double-click the [Event] column on line 48 to set a break condition. A blue dot indicates that a break
condition has been set. To clear a break condition previously set, double-click the blue dot.
The E10A-USB emulator provides two types of break function: a hardware break function and a software break
function. This example uses the hardware break function. During debugging of the SH7125 program through the
E10A-USB emulator, up to ten breakpoints can be set as an [Event]-type break (hardware break function). This type
of break is advantageous because it does not require write access to the on-chip flash memory of the SH7125 to set
or clear a break condition, since it is implemented by the break controller in the microcontroller, and thus it does not
degrade flash memory endurance. In contrast, software break conditions can be set for up to 255 points, but the
flash memory is written to every time a condition is set or cleared.
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