Renesas M16C/6NN Bedienungsanleitung PDF herunterladen (Seite 24)

15. Reserved area

The addresses not specified in the Hardware Manual for the M16C/62P and M16C/6N Groups are reserved area. Do

not change the contents. Otherwise, the E8 emulator cannot be controlled.

16. Debugging in the stop mode or wait mode

When debugging in the stop or wait mode, the program cannot be stopped by the E8 emulator. If you attempt to

stop the program during the stop or wait mode, the emulator will be uncontrollable.

Do not operate the window until the program stops at the breakpoint by setting the breakpoint at the processing unit

where the stop mode or wait mode is cancelled. When using the stop mode or wait mode on a user program, firstly

disable the automatic update in the watch window or fix the display in the memory window so that the memory

access will not occur during execution.

17. Peripheral I/Os during a break

During a break, although interrupts are not accepted, peripheral I/Os continue to be operated. For example, a timer

interrupt is not accepted although counting a timer is continued when a user program is stopped by a break after

operating a timer.

18. Exceptional step operation

a) Software-interrupt instruction

STEP operation cannot be performed by continuously executing the internal processing of instructions

(undefined, overflow, BRK, and INT) which generates a software interrupt.

<Example> INT instruction

NOP

INT #3

NOP

JMP MAIN

INT_3:

NOP

REIT

The address at which the program should be stopped.

Passes through if the STEP operation is carried out.

b) INT instruction

Debugging of the program using the INT instruction should be used with the GO command by setting a PC

break for the internal processing of the INT instruction.

NOP

INT #3

NOP

JMP MAIN

INT_3:

OP Break

REIT

Execution with the GO command

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Renesas M16C/6NN Bedienungsanleitung Seite 24