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8. For the result by software trace, a value in the [Data] item is not correct (that value is correct
for window trace).
2.2.3 Notes on Using the JTAG (H-UDI) Clock (TCK)
1. Set the JTAG clock (TCK) frequency to lower than the frequency of the peripheral module
clock.
2. The initial value of the JTAG clock (TCK) is 1.25 MHz.
3. A value to be set for the JTAG clock (TCK) is initialized after executing [Reset CPU] or
[Reset Go]. Thus the TCK value will be 1.25 MHz.
2.2.4 Notes on Setting the [Breakpoint] Dialog Box
1. When an odd address is set, the next lowest even address is used.
2. A BREAKPOINT is accomplished by replacing instructions of the specified address.
It cannot be set to the following addresses:
• An area other than CS and the internal RAM
• An instruction in which Break Condition 2 is satisfied
• A slot instruction of a delayed branch instruction
3. During step operation, specifying BREAKPOINTs and Event Condition breaks are disabled.
4. When execution resumes from the address where a BREAKPOINT is specified and a break
occurs before Event Condition execution, single-step operation is performed at the address
before execution resumes. Therefore, realtime operation cannot be performed.
5. When a BREAKPOINT is set to the slot instruction of a delayed branch instruction, the PC
value becomes an illegal value. Accordingly, do not set a BREAKPOINT to the slot
instruction of a delayed branch instruction.
6. If an address of a BREAKPOINT cannot be correctly set in the ROM or flash memory area, a
mark z will be displayed in the [BP] area of the address on the [Source] or [Disassembly]
window by refreshing the [Memory] window, etc. after Go execution. However, no break will
occur at this address. When the program halts with the event condition, the mark z disappears.
7. If you wish to use a BREAKPOINT (software break), specify the SH2A_SBSTK command to
enable use of a user stack before setting a PC break. While enabled, extra four bytes of a user
stack are used when a break occurs. The value of the stack pointer (R15) must be correctly set
in advance because a user stack is to be used. By default, use of a user stack is disabled. For
details on the command, refer to the help file.
• Example
To enable use of a user stack:
>SH2A_SBSTK enable