User`s manual

21
• CD-ROM
When the emulator is in use, the CD-ROM decoder cannot be accessed in the module
standby state. Clear the module standby state before accessing the corresponding registers
in the [IO] window, etc.
13. Illegal Instructions
Do not execute illegal instructions with STEP-type commands.
14. Reset Input
During execution of the user program, the emulator may not operate correctly if a contention
occurs between the following operations for the emulator and the reset input to the target
device:
• Setting an Event Condition
• Setting an internal trace
• Displaying the content acquired by an internal trace
• Reading or writing of a memory
Note that those operations should not contend with the reset input to the target device.
15. Contention between the Change of the FRQCR Register and the Debugging Functions
The following notes are required for the user program for changing the multiplication rate of
PLL circuit 1 to change the frequency:
• Avoid contention between the change of the FRQCR register in the user program and the
memory access from the [Memory] window, etc.
• When the automatic updating function is used in the [Monitor] window or [Watch] window,
generate and set a break of Event Condition for an instruction immediately before changing
the FRQCR register. Contention will be avoided by generating a break and executing the
user program again.
For the change of the multiplication rate of PLL circuit 1 and the FRQCR register, refer to the
hardware manual for the MCU.
16. Contention among Cache-Fill by Connecting SDRAM to the 32-bit Bus, Access to the MCU,
and the Debugging Functions
Malfunction may occur if the following conditions are in contention in the system in which
SDRAM has been connected to the 32-bit bus:
• Cache-fill (burst) by connecting SDRAM to the 32-bit bus
• Access to the MCU
• H-UDI read/write access