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RENESAS TOOL NEWS on October 16, 2003: RSO-M3T-PD32RM-031016D
A Note on Using Emulator Debuggers
M3T-PD32RM and M3T-PD32R
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Please take note of the following problem in using the M3T-PD32RM and M3T-PD32R emulator debuggers for the M32R family MCUs:
- On the break function using the pre-execution PC break
- Products and Versions Concerned
All versions of the M3T-PD32RM
All versions of the M3T-PD32R
- Description
When the pre-execution PC break is used as an event of a breakpoint, the break function may not be performed properly.
- 2.1 Conditions
- This problem occurs if the following four conditions are satisfied:
| (1) | The target MCU belongs to any of the following groups:
32170, 32171, 32172, 32173, 32174, and 32176 |
| (2) | The pre-execution PC break is used as an event of a breakpoint. |
| (3) | The pre-execution PC break is used as an event of a chip event. |
| (4) | The breakpoint and the chip event in (2) and (3) above are set at the same address. |
- 2.2 Example
- If the target program is started with a breakpoint being set in the procedure shown below, no program break occurs when the instruction
at the specified address (1000H, for example) is executed:
(The procedure shown below is an example in the M3T-PD32RM V.2.00 Release 1 and M3T-PD32R V.4.00 Release 1.)
| (1) |
Open the Program window and double-click the mouse's left button in the area for setting a breakpoint at address 1000H. A breakpoint is set at that address.
In Single Chip and External Expansion Modes of the M3217x group, address 1000H is within the internal ROM area, so the pre- execution PC break is used as a breakpoint and "b"s are displayed in the breakpoint display area.
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| (2) |
Follow these steps in the Trace-point setting window:
- Click the CE0 button in the Set Chip Event area.
The CE0-Set Chip Event dialog box appears.
- Perform the following in the CE0-Set Chip Event dialog box:
2.1 Check the Enable check box.
2.2 Select "Preexe-PC 0" in the Event Type combo box.
2.3 Type H'1000 in the Address text box.
2.4 Click the OK button.
- Click the Set button.
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- Workaround
Don't set a breakpoint and a chip event that use the pre-execution PC break as their events at the same address.
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