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IMPORTANT
Note on Display of MCU Status:
•"MCU status" you can refer to in the MCU tab of the MCU Setting dialog box of the emulator
debugger shows pin levels of the target system. Make sure that proper pin levels are specified
according to the mode you use.
(1) When single-chip mode is used:
CNVss: Low
(2) When memory expansion mode 16-bit data bus width is used:
CNVss: Low, BYTE: Low, HOLD*: High, RDY*: High
(3) When memory expansion mode 8-bit data bus width is used:
CNVss: Low, BYTE: High, HOLD*: High, RDY*: High
(4) When microprocessor mode 16-bit data bus width is used:
CNVss: High, BYTE: Low, HOLD*: High, RDY*: High
(5) When microprocessor mode 8-bit data bus width is used:
CNVss: High, BYTE: High, HOLD*: High, RDY*: High
Note on Breaks:
• The area displaying break points in the program window of the emulator debugger shows the
following breaks.
(1) Address-match break "A"
This is a debugging function which breaks a program, using the address-match interrupt
function of the MCU, immediately before the system executes an instruction at a specified
address. The instruction at the preset address will not be executed.
(2) Software break "B"
This is a debugging function which generates a BRK interruption by changing an instruction
at a specified address to a BRK instruction (00h) to break a program immediately before the
system executes an instruction at a specified address. The instruction at the preset address will
not be executed.
(3) Hardware break "H"
This is a debugging function which breaks a program by setting the detection of an execution
of an instruction at a specified address as a break event. The program will break after the
instruction at the specified address is executed.
Notes on Address-Match Breaks:
• As the processing speed of setting and canceling address-match breaks is relatively fast, you can
save the times of writing into the internal flash ROM of an MCU. Therefore, address-match breaks
precede the other breaks when setting breakpoints in the internal flash ROM area of an MCU.
•Address-match breaks can be set only in RAM and ROM areas of an MCU.
• Address-match breaks can be set at up to four points. The other breaks are set as software breaks.
•Address-match breaks can be set or canceled even when the user program is being executed.