QB-RL78L1C In-Circuit Emulator

CHAPTER 4

CAUTIONS

R20UT2703EJ0200

Rev.2.00

Page 38 of 42

Jan 31, 2014

4.2

Note of Debugging

- Operation after target system power application

After power application, a program will be executed for the target device mounted in the target system when

reset is released.

However, with the QB-RL78L1C, the program does not start until an operation to start

execution is performed after the program is downloaded using the debugger.

- Relation between Standby function and Break function

The break is interrupt function of CPU. The standby mode is released by the break for using the following

debug function.

- Forced break function.

- Step execution of the standby instruction (Stops user program after executing instruction)

- Pseudo real-time RAM monitor function (Break When Readout)

- Pseudo Dynamic Memory Modification function (Break When Write)

- Breakpoint setting during executing of the user program.

- Invalid memory access detection function (IAW)

The behavior when detecting an invalid memory access is different between target device and emulator.

Target device :

Reset

QB-RL78L1C :

Fail-safe break

- CRC calculation function

When using the CRC calculation function, do not set software breaks. Differing calculation results will be output.